Weight training is really beneficial. I don't think I look like I do without it. It's tough to get over that initial fear, but it's SO GOOD for you that after a while you just won't care what other people think.
My stomach has gotten flatter in the past few weeks since I added more weight/strength training and cut out some cardio. I know I might have lost a few pounds (haven't weighed myself though, I'm not going to until the 8th) which I didn't want really, but I think all of this change is paying off.
Seriously I have never in my life been so closer to a flat stomach like this. It's CRAZY. I'm eating MORE, exercising a bit less and it's totally working
I have one day a week of just bodyweight exercises, one day of medium weight training and one day of heavy weight training. My heavy day is quick—just 20-30 min—but it's done wonders.
I'm eating over 2000 calories a day too and making sure to get lots of protein. I can see that I've got more muscle in my arms, legs, and back and my stomach is slowly flattening out and I think my ab muscles are trying to emerge, lol.
Oh and I don't do crunches at all! The only dedicated ab exercise I do is planks on my bodyweight training day. Otherwise all of the other exercises I do work my entire body.