I would personally not make a rash decision - it would be different if your trip was a week from now. Take a breather and see how you feel in a few months. If you're on a tour, then have some solace that tours are risk-averse too, and they'll take precautions to keep you safe (there's no 100% safe but reasonably safe). Having said that, I don't believe that Turkey can be truly stable if its neighbors across the border aren't stable - and there is no light at the end of the tunnel for Syria (or ISIS). And there's no immediate hope that there will be some kind of peace internally with its Kurdish population. And then there are large political divisions within its population, and its leader is a very polarizing figure. Turkey's has had something like 14 deadly incidences in the last year or two, some involving tourists. It's tourism numbers are way down. In comparison, France is suffering too, and France is the # 1 travel destination worldwide. I will go to Turkey again (not sure when) and I've already been there 3 times (on a tour and solo)...the reason is that it's a fascinating place, it's huge, and very good value compared to many.
Good luck with your decision, but take some time to think about how much you'd like to go and whether you're willing to weigh a small risk for (I would argue) a big reward. At the end of the day though, you want to enjoy and feel good about your vacation so even a tiny risk may not be enough to overcome bad feelings. Even if you don't go, there are tons of other interesting places in the world that you may feel better about, so nothing wrong with picking one of the either.