Deadly ripped gave a good list, I may add lazyness and lack of tolerance toward "the field" and its rules.
From the dating phase to the texting rules then arranging the date, flaking risks, meet her friends, drive to the place and find parking place, call her and pick it up when she does, change your schedules and so on...so yeah I would say lazyness in many cases, I dont need a second work and most of all when I get a work, I work cause I know I get paid instead of "maybe".
Also the desire to have a girl which is yours and no one else is touching, I feel like driving a personal corolla is better than sharing a ferrari with other men where you find food under the seats, empty tank or wrong setting on the seats.