How much power is enough power?

I don't think there's ever enough power, I mean equipment that we're working so hard to upgrade eventually becomes obsolete. New equipment comes out, the cap could be raised, and a new standard of godly is set. So we're at a crossroads, most of us at least: we can either choose to spent additional but MASSIVE amounts of money to find the quickest means for the new standard of godly, spent endless amounts of hours learning to merch effectively to avoid spending lots of real money, or just be accepting of the fact that people will have a significant amount of better damage than you.

This was the main thing I wanted to hit on. Because how does the equipment become "obsolete" but the monsters you fight remain the same (for the most part). So what compels the mentality that your equipment becomes obsolete when new equipment is release. Other than the instances where they ramp up monsters.

I know it sounds kind stupid but I mean like better equipment is better equipment, but that doesn't stop you from doing the same things. (granted monsters dont evolve into anything)