Ah, the old "Just bought a new SR9 and surprisingly I really like it a lot!" thread.
Well, don't feel badly. I just bought an SR9, and I like it a lot, also. That was almost three years ago, now. In fact I like it more than a lot. Like anything, it's not everyone's cup of tea but the people who like the gun and feel comfortable with it know why they feel that way:
1) Really great ergonomics, pointability and shootability and feel in the hand. This depends on the hand, of course. I love the way the SR9 fits mine.
2) Reliability - mine's still running great and I stopped counting at around 1500 rounds. I shoot it, I clean it, I shoot it some more and I don't worry about it.
3) Safety - there are people who want and like and appreciate the features, I'm one of them.
4) Price - couldn't find a better new pistol for the price I bought mine for.
5) Ruger service - I know if anything goes wrong, Ruger will ship it and just fix it without any drama, and probably for $0.00.
Enjoy the gun, shoot it well, shoot it safely, and feel good about your purchase. It's a solid, comfortable, redundantly safe and modern 9mm pistol at a great price.