One Bottle for Shampoo and Body Wash, but for men

Now that men are using shower gel, they suddenly think of body wash and shampoo together? Why not sooner? You can't tell me the science only came up with that just now.

You could tell me that companies thought that women had time to fuck around with several bottles in the shower at the gym or when traveling though. That I would totally believe.

I know with my job, work-out, and social schedule, I have ALL time in the world to use two, three, maybe even four different products in the shower. Not to mention all the time I spend trying on pants to see if I should buy the "tall" or the "average", because its much more difficult to just make women's sizes in actual measurements. They do it for men, but women prefer to learn a whole other language because we've got all the time in the world!