Why do you feel so attached to “your solutions” just curious?
When you multiply big numbers do you do them on paper instead of a calculator? Why should the calculator figure out your tip?
It’s just a tool bro. It’s not a big deal. You’re still solving problems, if you can use it you can go far and wide. You’re not forced to use it.
Times change. Things evolve.
Lots of people paint or do pottery as a hobby. But most people just prefer to buy their bowls. If that makes sense.