Are birth control pills for everyone?

I’m 16. It seems like all these mothers are suddenly putting their daughters on these pills, even the ones who aren’t having sex. It just seems kind of stupid to me. My question is, well, are they really needed if you use a condom? I’m kinda curious because I have blood circulation problems, and when I got diagnosed the doctor said told me to never smoke that it’d make it horrible, and she also told me that birth control pills may be a problem. I have no problems with my period, I rarely even get cramps. And all my friends that are on them complain about weight gain and room problems and stuff…