The reasons why people screw around on their partners are quite complicated, and can't be simply reduced to good or bad. There may be problems in the relationships that cause it, or perhaps the person who is cheating has psychological issues. Or it may mean the marriage needs to be over. And in some cases, partners or spouses don't care that the husband or wife is cheating, some people have open marriages or relationships. And in terms of bad things, EVERYONE has done something that could be considered bad. As the saying goes, there's only one judge, named GOD, so chill and let the father do his job.