I love the Genesis Sonic games (naturally) and own them on about every console I have (Originals, Sonic Jam, Sonic Mega Collection, Genesis Collection, XBLA) and I even loved the hell out of Sonic Adventure 1 and 2 when they came out. Since then though I haven't found anything that was really worth enjoying (Although I did think Sonic and the Secret Rings was pretty cool in concept and worked so much better than the horrible Sonic 06). So while I ignore most of the news/games now, it's mostly becuase there hasn't been anything much good to come from Sonic in recent years. You know how I feel about Sonic 4 as well, so I won't get into that...
Thing is, it's nothing to do with how much I like Sonic, but it just wasn't all that fun I thought. It didn't feel a whole lot like classic Sonic, and it wasn't much chop as a platformer on it's own merits either I thought.
The jokes and dialogue were the best I've seen in many a year for a Sonic game though ("You know, when you consider we're robots, what we are doing here is actually quite gruesome if you think about it...")