If you get tired, you can stop, save your place and pick up where you left off. When you open a book, you don't have to worry about who else has opened it. If you aren't sure what you're doing, you can always ask your roommate for help. If you admire a friend's handgun and tell him so, he will be impressed and let you try a few rounds with it. A handgun doesn't take up a lot of closet space.
Handguns function normally every day of the month.
A handgun does not mind if you go to sleep after you're done using it. A handgun doesn't care how big your trigger finger is.