Will someone please tell me why I'm still watching "Entourage"?

The new season of HBO's "Entourage" starts Sunday at 10:30 p.m. and, while watching the three episodes sent for review, one question kept popping up in my head: Why am I still watching this show?

"Entourage" finale recap: "Give a Little Bit"

I don't have much to say on this season's finale of "Entourage," except that it didn't really feel like a finale, did it?
Most of the major arcs revolved around the supporting characters and not Vince, a rarity on this show (for finales, at least). I liked how it resolved the Lloyd-Ari plot, and believed that Ari would forgive Lloyd for abandoning him (because who wouldn't love Lloyd?). Did I believe Lloyd would forgive Ari for all his abuse? Eh. I don't know. But I bought that Lloyd would buy Ari's epiphany following the apology from Terrance. And, honestly, I like these two better together than apart. It's sort of like a dysfunctional marriage. These two men might fight and insult and torture each other, but there is real love and dependence there. In fact, I'd say it's the most believable relationship on the show.
The second most believable is that between Ari and his wife. I liked that therapy scene, as it showed a very honest push-pull between this very authentic married couple. Of course, she wouldn't just hand her money over to Ari, especially since she's sure he's just using it to exact revenge.
But, of course, Ari could talk her into seeing the situation his way. That was, after all, a very good speech.
As for the relationship between the four guys, it was, as it's been all season, the weakest part of the show. I did really love the Matt Damon cameo. The star again showed his versatility, played a hilariously self-righteous version of himself (also loved the brief, but equally funny, bits by Bono and LeBron James). The Damon cameo also inspired the best Drama line of the night ("He Jason Bourne-d me!").
But, as for the Turtle-Jamie and Eric-Sloane stories, I just didn't care. I will never care. Yes, Eric's been marginally less dull this season, and Turtle's been a skotch less useless, but it's just too little, too late. I really hope HBO gets the good sense to pull the plug some time soon.
I'll stick with it for the continually great work by Jeremy Piven by Ari and the underrated work by Rex Lee as Lloyd.
But I'm not terribly invested.
Thoughts?

"Entourage" seldom veers beyond pleasant

Usually, when I watch a show every week, it's because I enjoy that show. Perhaps I like the writing and/or the acting. Maybe I'm attached to the characters or find the stories addictive. At any rate, there's something that brings me back every week. Then there's the handful of shows I seemingly watch for no reason, other than habit. Maybe I once found them compelling, but, now, they are hit or miss at best.
In the past few seasons, HBO's "Entourage" has become one of those shows. Once a fresh, funny portrait of the life of a movie star and his various hangers on, the show -- which returns for its fifth season Sunday at 10:30 p.m. -- has become a bit tired, with nearly every season subscribing to the same formula: Movie star Vince (Adrian Grenier) is on the cusp of getting a big movie. He doesn't get it. It looks like his career is in jeopardy. Then, at the last minute, he gets either that movie or another, better movie. End of season.
Vince and the supporting characters have grown and evolved little over the various seasons, with Drama (Kevin Dillon) still a clueless pain in the butt, Turtle (Jerry Ferrara) still a goofy mooch and Eric (Kevin Connolly) still a loyal but wussy buddy/manager seemingly incapable of wresting himself from Vince's side.
Judging from the two episodes sent to press, the show does seem to making some movement toward changing the characters a little. Vince, it seems, is on a career upswing (and, in magical "Entourage"-land, does a guest spot on the "Tonight" show -- which is still hosted by Jay Leno!). Eric is planning to move out and is circling his flirty but hesitant ex Sloan. And Turtle, inexplicably, is still dating Jamie-Lynn Sigler (playing herself).
But these changes are too little too late and, as usual, whatever juice the show has comes from the character of Vince's agent Ari (Jeremy Piven, seemingly recovered from his bout with mercury poisoning)
Like the other characters, Ari is still pretty much the same guy he always was: loud, abrasive, occasionally cruel. But if the character is static, at least he's interesting, particularly in his interactions with his smart, ambitious assistant Lloyd (Rex Lee, who, unlike the show around him, is NEVER not funny). This season, Lloyd is trying to move up in the ranks, from assistant to agent, and Ari is struggling with both that and his new partnership with his friend Andrew (Gary Cole).
The scenes with Ari barking at his minions, and sweating over keeping it all together always make me wish that this show was about Ari and not Vince.
But it is about Vince. And, as such, it's not exactly bad -- just unremarkable. It's a pleasant enough way to spend a half hour a week, and, chances are, I'll keep doing just that.
But why?
The new season of "Entourage" premieres Sunday at 10:30 p.m. on HBO.