Cliff Notes version: The RE series is defined by shitty controls, and wouldn't be the same without them. The designers are too arrogant to admit they cheesed their way through several games by making challenging controls instead of challenging gameplay, and the long time RE fans will defend the controls to the death just because the series is well established. I just wish the rest of the game wasn't so fucking cool, because then I could forget about playing it and not care.
I had a long post typed out, but I deleted it in favor of comparing the RE series to Two Girls One Cup. The video is porn, it's got lesbians, it's got music to set the mood. But no matter how good any of that is, the whole thing is based on shit. That's what defines it. Yea you can watch it for the tits and ass, the lesbians, the sex, but you have to deal with shit or you don't get to experience the rest.
Of course, the difference here is that there's tons of porn out there that has all the same stuff, but without the shit. However, the selection of games that offer everything RE does, but without the shit, is extremely limited. Yea Dead Space is cool, Silent Hill is amazing, but there are major differences (aside from the lack of shit). You just can't get the RE experience without the shit, and I wish you could.