Keep in mind that there is no such thing as “wasted skillpoints” in EVE.
There are simply skillpoints that are useful now (or for a current situation) and skillpoints that are not useful right now.
As time goes on, circumstances will change and you will find yourself both branching out into different skillsets and revisiting others.
The skills you have trained now will eventually becomes useful at some point in the future or can be repurposed in interesting ways.
Example: When I was a nubbin, I trained up to use mining ships. After a few months I left that field entirely and focused on PvP.
When mining barges were rebalanced a few years later, I found use for one of the barges (now a tanky, more combat capable ship) and began to use it as a “bait ship” (see: I looked like a miner, but I was fitted to pin down targets and tank their damage until a friend could show and destroy my would-be killer).