Because it’s innately unhealthy, but more specifically I don’t want to be pressured into cheating on my partner or vice versa because it’s become the norm
I fail to see how someone else’s private relationship defines yours in any way. This sounds less like you have a problem with other people, and more like you have trust issues, whether towards yourself or towards your own partner. Either way, your relationship has nothing to do with anyone else’s, just like theirs has nothing to do with yours. If you don’t want to cheat on your partner, then don’t cheat on your partner.
Because it’s innately unhealthy, but more specifically I don’t want to be pressured into cheating on my partner or vice versa because it’s become the norm
I fail to see how someone else’s private relationship defines yours in any way. This sounds less like you have a problem with other people, and more like you have trust issues, whether towards yourself or towards your own partner. Either way, your relationship has nothing to do with anyone else’s, just like theirs has nothing to do with yours. If you don’t want to cheat on your partner, then don’t cheat on your partner.