How many times in life has someone told you “that’s a waste of time”? How often have you said those words to someone else, or even to yourself?
Here’s the thing: nobody other than you can define what is or isn’t a waste of your time, because it’s YOUR time.
It belongs to you and nobody else. You can and should use it as you see fit.
Frankly, anybody trying to tell you how to use or not use your time is judging your life and your choices according to their programming, their biases, their desires, their world view…and such a judgment is almost certainly worthless because it’s all about them.
When someone says “that’s a waste of time” to someone else, what they really mean is “that’s not how I would spend my time”, or “that’s not how I think you should spend your time”, or maybe even “I think you should be spending more time on/with me”.
Making someone else’s choices all about you…rather selfish, don’t you think?
If they are not you, they are not qualified to judge your path.