I believe that is the operative word in the topic. Whatever makes you feel better about your playing will make you play better. If you are hearing the things you want to hear come out of the amplifier, you're going to be more comfortable be looking to expand on that.
Some players are happy with the bare essentials. Some of us aren't. Because a pro picker can sound good on a barely adequate instrument without any electronics doesn't mean they won't sound better with better gear.
They don't buy things like Brad's Rev and Black Box, Effects processors, Match Boxes, etc. 'cause they want something else to carry. They use them because it makes them sound better.
If you have been playing for a good long while and feel like you're doing everything right, have good gear, but are just not happy with your sound, I say it's time to try something different. If it takes a different guitar, pickup change, better cables, volume pedals, picks, amps, effects or a combination of many things, just keep looking 'til you find it...then weld it in place
Generally, it's a circuitous culmination of many things.....technique, practice, etc. then better equipment.... a mental realization of the sound you want to hear... and round and round. Then one day, you just start hearing it happen.
If you are happy with just an amp and a volume pedal, good for you but don't expect everyone else to stop looking for a better sound through gear. I think it's most player's goal to have the best sound they can find. That's what keeps us going. Perhaps some of us are fanatics about it. You have to please yourself. Noone can tell you whether gear is a waste of time and money but you.
As I stated in my earlier posts, you need to have the basics right first, but there's more. The challenge is finding the things that suit
younot everyone else.