Nothing wrong with getting new toys IF they are actually bringing more joy to your experience, and you genuinely appreciate them. If you are getting stuff just because you feel like you NEED to because it is what you see everyone else running or because you can't bear to not have the latest, then that kind of takes the joy out of it, IMO.

I am good at not chasing the latest and greatest when it comes to road bikes. My current bike is probably worth around $1,500, and it is pretty much my dream bike in all the aspects I care about. Sure, it is 22 lbs, but while a lighter bike might be neat, it really has zero impact on how much I enjoy riding. I just don't get too exited about road bike equipment (except for tires), and never get the upgrade bug. I appreciate the recent trend towards more do-it-all road bikes, but the actual technology advancements over the past 25 years are for the most part unexciting to me.

MTB is a whole different story, because the equipment has changed drastically over the past 25 years. Heck, every 5 years sees real change, especially from around 1995 to 2010. During that time you could buy a new bike every 5 years and have a vastly superior ride. So it can be hard sometimes to just be like "yeah, there is stuff out there WAY better than what I am riding, but this is fine". You just need to remind yourself that this was fun BEFORE the new stuff came out and it still is.

Between 1998 and 2013 I have bought many, many MTB frames and forks, and too many tires to count (all of these things have advanced tremendously), and I got a lot of pleasure out of it, too. When you are pushing the limits on the trail, the differences really show up.