Life is unpredictable, and you could find yourself wishing you had the flexibility to regulate brokerage account offers. You can access them whenever you want, and there are no income limits or ceilings on your contributions. You put the money in, it grows, and you take it out.
You pay capital gains tax on the profits, but such is life. A brokerage account can even be collateral in a loan (often called a margin loan), which is partially how Elon Musk is funding his pending purchase of Twitter. Financial flexibility is a tool that you should at least want to have in your back pocket, even if you don’t intend on using it. You never know!