Actually, this is very good point! Problem is that the real issues have more to do with a very suppressed and dumbed down society. The ignorance people into marriage and/or relationships is pretty dismal and sad. Sad/dysfunctional home life is what accounts for poor preparation, that is, people are very immature as they approach their adult lives. Also the Church is major dysfunction with regard to preparing people for 'adult' life...comments here would be much too long to include.
Hawkins reasons are mostly bogus or he's gone way beyond what is real (a common problem he suffers from).