#1) it doesn't pay any dividends like stocks
#2) risk of extended drawdowns which could cause loss of principal unlike in a real estate investment where the property only goes up in value
#3) unfavorable tax treatment since it cannot be depreciated like many types of assets can be when used for business purposes
the fact that it doesn't pay any type of periodic cash flow while it is owned is a serious issue. for these reasons i don't really like bitcoin as an investment.
Those are all true and valid, but you have forgotten Bitcoin's ethos and why we're actually HODLing Bitcoin. It's not for mere financial gain, but it's also with the ethos that cryptography and using tools built based on cryptography shall bring forth real social change in the world.
Good luck to you and your journey if you don't like to HODL Bitcoin.