Zamxiri, it is somewhat hard to understand your post.
Instead of motivate
, I think the word you want is 'explain'.
Most of us who are frequent posters here are somewhat older, but not all posters are. Most of us have grown up to live useful lives but we still can be childish and thoughtless from time to time. We can also be childishly playful, which most of us think of as a good thing.