anyone else abandon diversity overtime and just go all in on one coin or token?

I used to have a pretty diverse portfolio. I had Nano (converted all of it to eth before it just fell off of a cliff thankfully). I've had polkadot, ADA, chainlink, bitcoin, and even a bit of doge and some other stuff but overtime I have almost entirely consolidated everything into eth with a small amount of algo. Im done trying to bet on the little guys (not referring to bitcoin of course but the others). I will probably just hold my algo and only buy eth from now on. I just don't see a reason to diversify. The only coins I have confidence in are eth and bitcoin, everything else feels like a gamble. And if eth and bitcoin fall I assume the rest will and it would just be catastrophic for the entire market if it even exists anymore.