I've been a fan for about 13 years now (basically as early as I can remember), it's just a habit I can't really break, I didn't watch it through the end of 2008, most of 2009 and the beginning of 2010, that was mainly because I didn't have the opportunity to watch RAW due to college. Now I've left college and started working, I've got the opportunity to watch RAW again, don't start work until 4 in the afternoon
its become a habit. it's something i grew up with in the 80s and 90s and i still watch it. i still enjoy it...not as much as i used to, but i still enjoy it. there's some things that are better today than they were back then. and there's some things that were better then than they are now.
I've enjoyed WWE since the moment I started watching it. It has been some rough times like Raw 2009 but always there is something that keeps me watching and I don't complain about how the product sucks, cuz for me it doesn't, it always has it's good points.
...I'm afraid that I'll miss something momentous if I cease tuning in. I gave up watching wrestling completely in mid 1996, and so subsequently missed the rise of Austin, DX and the whole Attitude era and Monday Night wars. I want Vince McMahon to prove that he's still a genius and still has what it takes to fix an ailing company and make it worthwhile again.
Same reason I watch TNA and the same reason I can't get into indies. I like to see talent that I'm interested in work and play in storylines. I like to see how they react to scripted events etc and so forth. It's performance art, mang.
Habit mostly, if a different company had been around for as long (or longer) and was as big a part of my childhood as WWF/E is then I'd be watching that instead. I have no doubt that there were diehard WCW fans during the dark days of the Russo era despite WWF being superior in almost every way.