Are there any cons to having a lot of sex ?
In my experience, no. The idea that sex addiction is a thing takes up endless amounts of space on the Internet (here on Quora and elsewhere) and occupies mass-media outlets, but do you know where you don't see it taking up space? In the DSM--the manual used ou psychological and psychiatric practitioners. That's because sex addiction is not actually a thing. It was made up by a guy named Patrick Carnes, who has become very very very wealthy selling "cures" for this "addiction" at six figures a pop in US dollars. But it's not accepted by the APA or other recognized psychological or psychiatric institutions. It's a popular idea, because we're all taught by society that sex is bad and the notion of "sex addiction" offers a scientific-sounding validation of conventional social norms. But it's still not really a thing. Now, you can have sex in all kinds of unhealthy and destructive ways. You can be indifferent to the needs and experiences of your partner(s). You can ignore consent. You can try to use sex to get personal validation or self-esteem. You can be controlling or coercive or manipulative. But in all those cases, it is not the sex that's the problem. The problem is selfishness or indifference or coercion or poor self-esteem. You can have those problems without sex, and you can have sex without those problems. Sex, of and by itself, won't create problems, or make a healthy person become unhealthy. There is no reason to fear sex. If it's what you and your partner(s) want, have sex! Be responsible. Set boundaries. Respect boundaries. Communicate. Protect your health. Be considerate. Be compassionate. But don't be afraid of sex.