Because people actually
don't like to think. They hate being confronted with unfamiliarity, which is the prerequisite for all learning. They dislike coming up with original ideas, as they have none and would need to
work to get some. It's tiring to concentrate for a long time, and it's mentally draining. People routinely give up trying to come up with a solution or even trying to solve the problem altogether when they can't find a quick and easy solution. That's the level of creativity and intelligence in most people - they don't want thinking too much to get in the way of just experiencing life, preferably in bite-sized episodes of 30 minutes (minus ads).
Being handed all the correct solutions without the need to work for them in any way is a nightmare for artists and artisans, craftsmen and researchers, curious puzzle-solvers and Ayn Rand believers. It's pretty much a paradise for everyone else.