As 당신 grow older 당신 become 더 많이 mature and capapble of coping with responsibilities, and the way 당신 see the world changes.
When new and difficult situations arise 당신 often have to act in ways 당신 never thought 당신 would.
Changes in lifestyle also affect limits. 100 years 이전 it was considered wrong for women to vote 또는 own property, and now women are almost equal to men.
We wait because some of the things we'll find ourselves doing in the future are beyond imagination, 또는 maybe because we want to put it off as long as we can. Who knows??
Sorry for the mini-essay - I get carried away with my thoughts sometimes, hahaha!! XD