Considering consolidating my crypto and going all in on BTC, I need help with pro cons

I have some bitcoin, not a whole coin, but a decent amount, quite a bit more ETH with some in Polygon. Diversity has always seemed like a good idea to me, I’ve got money in IRAs, my 401k, CDs, and individual stocks too. But recently I’ve been considering swapping all my other crypto into Bitcoin. It just seems dumb, like if I had 5 ETH and it reaches 10k, I’ll have 50k, but if I swap those to BTC and it reaches 100k (which seems inevitable), I’d have double. Am I thinking too simplistically about this? Other than everything crashing to zero, what are the cons?