I think an additional thing to consider would be how you choose women who turn out to be so unsuitable.

It is good to limit your losses, which is what you are addressing.

In my opinion it would be even better to have better instincts at first, to make better choices at first, so as to not even be attracted or involved at all with women who turn out to be so dramatically unsuitable.

This I think would be good to discuss with a therapist.