Children learn by doing. When your children do a task, they build their brain connections. When we do a task for them, we reinforce our own brain connections without adding to theirs.
Do your children ever complain about not being able to do something? My daughter used to complain that she wasn’t good at making a peanut butter sandwich so she wanted me to do it for her. I responded that this was the exact reason she needed to practice doing it! If I kept making the sandwiches for her, she’d never learn how to do it herself.
Did she thank me for this opportunity to practice? No. However, eventually she did get very good at making peanut butter sandwiches!