I have saggy skin on my stomach. I've lost nearly 70 pounds, but I weighed more than 200lbs in high school, so there's a good chance I've lost around 100lbs overall.
I'm 23 and never had a child, so even though youth is on my side I still have saggy skin on my stomach. I've just reached goal though, so I don't know if it will get better with time. I did everything "right" too—I drank lots of water, I lost at a rate of 1.8lbs a week, I did weight training—and I still got it.
How do I deal with it? I look pretty damn good in clothes and I refuse to let my stretchmarks (and I have A LOT on my back) and my saggy stomach stop me from showing off and living my life. I still don't know if I'll wear a bikini in the summer or not, but I'm going to run around in a bathing suit regardless! I also FEEL a lot better and that is worth the price of saggy skin!
I'd probably need a tummy tuck to get rid of it, but considering that I haven't had any kids yet it's probably a silly thing to do.
My fiancee doesn't care about my saggy skin at all either. He bugs me to wear a shirt that shows off my midriff but I am not quite at that level of comfort yet
Don't let your worries stop you from getting to your goal! Just about anyone will tell you that it's totally worth it!