Without knowing why the problem is important, you do not really understand the problem yourself. Understanding the problem better is often even more challenging than solving the problem (once understood). I have seen people go circles around trying to solve the problem at hand without reaching the solution that actually solves the problem, just because they did not understand the problem correctly to begin with.

There indeed are curious problems. Estimating number of golf balls that can fit into a bus is certainly not one of them. Try to come up with a curious problem, then we'll talk.