Pumps aren't really that much of a hassle if you get the right one to start with. Modern pumps are sealed, so there's no oiling, just an occasional filter clean out. They can easily last for years. Like many things, it's responsible enough in moderation. If the proverbial 'everyone' does it rather than looking into the alternatives, though, it might become less responsible.
Tiny things can add up into big things when summed over a large population.