Because it's not that I don't like Sonic games, it's that I don't like most of the old Sonic games.
I think you can understand where I would take issue with someone saying that [unreleased game] is going to be bad because it doesn't look similar to [mediocre game]. I am very excited for Sonic 4 - it could be the game that takes the not-completely-faulty-but-still-pretty-flawed system that was Sonic 3 and Knuckles and make it not very flawed at all. They could make not only a good game, which is enough reason to get excited, but a good Sonic game, which hasn't either hasn't happened in years or has never happened at all, depending on your viewpoint.
I'm only trying to defend the idea that Sonic 4 could very well turn out to be a pretty good game. If you want me to stop so that people can continue shining up their nostalgia goggles and denouncing something that they have literally no reason to denounce, I will lift my dress and scoot right on out.
I agree with you on the Metroid thing. But you know what the flaw in your argument is? Super Metroid was still fun the first playthrough.
That goes for DKC and Mario games as well. DKC is all HOLY SHIT GIANT BEES and Mario is all LOOK AT ME I'M FLYING AND SHIT and Sonic is all hum, another ramp that I have to walk up because I wasn't going fast enough because I was going pretty fast but then oops spikes popped up in front of me what the hell they didn't even damage me they were literally just there to make me stop moving ughghghg.