I don't want to date people who have mental issues
Is there something wrong with people like that?
I don't want to spend time with someone who has mental health issues.
Dating someone is a big time, emotional, and physical commitment. Thus, you should be able to decide that people who can not get their heads on straight are not worth your time.
I'm going to be sure to look out for the signs, so I don't end up dating someone with issues.
You control who you date and who you do not date. Not all people can be compatible and it is good to know who you are compatible with.