To each his own when working out. If feeling too exhausted to do squats & DL's in the same workout, than it's not for you. But than again, hundreds of men do with very good results.
There is a point when a well planned workout, and not just lifting weights, insures that squats & DL's can give unexpected muscular gains when understanding the mechanics of each exercise. And understanding that each can be a superior leg and hip movement, one following the other in a serious workout. Good Luck.