Why do I need maximal decentralization?

I know decentralization is good. But I’m wondering if it’s worth the cost.

I like buying some NFTs, doing some defi, and speculating.

Why do I need everyone to be able to run their own node? I have no interest in doing so personally as long as I can view node data from a non-profit (if I chose to).

I mostly want the capability of web3 in the future. What use cases necessitate eth’s maximal decentralization vs good decentralization with sol or avax and a fraction of the cost?

Thanks for your thoughts, I need to understand better.