Of course not. Anytime one uses the word "all" the answer is usually wrong. No one's personal experience speaks for everyone else's. Globally there are 7 billion people on the planet with about half of them being male. To say every male cheats or is going to cheat at some point logically does not hold water. It does not take into account one's culture, religious background, personal integrity, or their individuality.
People who use the word "all" are likely to have given up on having a loving sincere relationship. They simplify things by saying "all" instead of saying the men (I'm) attracted to tend to cheat. This type of thinking keeps them from examining their (selection process). It's not me, it's them!
However each of us (chooses) our own friends, lovers, and spouse. If you go to the grocery store to buy an apple but purchase an onion instead, whose fault is that? The purpose of casual dating is to conduct "due diligence" in order to determine if you want to have an "exclusive relationship" or possibly spend the rest of your life with someone. Too many people allow themselves to become "emotionally invested" before they truly get to know someone.