Suppose my lack of conviction towards Monero comes from this:

"bitcoin is an awesome store of value, but it needs a 2nd layer for greater privacy and to solve the fungibility problem. lightning is maturing. cashu is also maturing. monero solves the spend issue now with privacy baked in on a protocol level. it is currency. it's meant to be spent."

Lightning may be maturing, but we're zapping sats on Nostr and recently made purchases using Lightning as well. Monero may be spendable now, and may indeed solve the scalability of microTXing now but it doesn't seem to be as widespread in terms of adoption. What resources would you suggest looking at?

I guess my question then becomes, what does monero solve that bitcoin cannot solve with layers(even if it takes a while)?