Nothing wrong with having some stocks in your retirement account. I do the same. I also hold stocks in a non retirement account but I am slowly selling them off to buy more bitcoin. That being said I am not against adding to positions either when I see value I bought more SQ when that hindenburg hit piece came out.

Bitcoin, provided it gains adoption as we all expect, should also provide for a good retirement. Make sure you set aside some for the kids (if you have kids). Depending how far in the future you are retiring you may only need 0.1BTC a year or less to fund your full retirement and certainly less if you have other sources of income.