"Do you agree?"
Yes, most relationships (unless otherwise stated) is a relationship without infidelity.
The issue is, when you talk about 50% cheating, this is because the committed to a one on one relationship, not a polyamory.. so when they lie to their partners, or sext another woman, they are cheating on the rules they set at the begining.
Maybe more people should get into polyamory so the % of cheating goes down?
But then i think a lot of people wouldn't feel as comfortable in their relationships as they do.
Fact is, each to their own. But if you commit to a one to one relationship and then you get with someone else, you're breaking the rules.. or Cheating.
If you commit to a polyamory relationship then alls bless isn't it.
So maybe the issue is people not letting their faithful partners know that they'd actually prefer a polyamory relationship.
Anyway if a man is running round dipping his toe in other ponds he's obviously a immature boy probably with self esteem issues.