Many people stop asking questions as they get older because they haven't found satisfying answers as of yet, or they don't they don't think anyone has answers, or that any exist.
It also takes humility to honestly ask and seek answers.
Children have no problem asking questions and lots of them!
If we continue to ask questions we keep our brain working and will probably find the answers if we are honestly seeking. Keeping us hopeful, positive and youthful in mind.
Once we stop and accept everything we hear or become apathetic we just start to decay, so to speak.