Why do people still buy BTC?

Let me start by saying I am still a noob and I don't claim to understand much about this space.

To me, it seems like the only "advantage" BTC has going for itself is it being the first cryptocurrency. Besides that, I feel like it's just outdated, old technology all around. Slow, high fees, wasting a lot of resources. I could not think of a single use case where it's still the best solution there is.

I would have expected the price for BTC to go down relative to other cryptos. Does not seem to be happening, it's still the "big daddy". Am I missing something, and BTC is still amazing for some use cases? Or is it just the delay before people realize that there are better alternatives for every use case I can think of? I know no one can predict the future, just interested in your thoughts on that.