Should guys be ready to get hurt mentally when dating?

Absolutely if there is conscience and feelings involved. I suppose the sociopath, psychopath, and likely Narcissist are free from such Dating Trauma.
If you're afraid of rejection, then yes. You will get mentally hurt, however if you can reframe rejection in a better light, then you have no reason to be afraid of getting hurt mentally unless you are a hopeless romantic who throws themselves at anyone who showers you with affection. Learn to take things slow, and assess the person, you will learn people should earn your trust and affection through questions and displayed behaviour/actions.
No.
Nobody should be putting themselves in a position to be mentally damaged when seeking a partner.
Depends upon his mental makeup. I never have, but my attitude has these two components:
1. I don't want to be with her if she is not into me. Makes it easier to let go.
2. There are lots and lots and lots more women out there.
Opinion
3Opinion
Whenever you make yourself vulnerable you should be mentally prepared.
that victim mentality will help them destroy themselves and the relationship, so no.
Yes. Dating can be very painful and distressing for everyone, since rejection is such a big part of it.
No, a guy should never get attached until the relationship has lasted at least a yr. If you don't feel you can't hurt.
yes, many women nowadays are cruel and don't obey courtesy rules
Superb Opinion