Bank investors have more certainty because there capital is completely safe but they give 8-10% annual profits to the investors of per year. But it is comparatively less in terms of profits.
On the other hand you will get constant profits from crypto as if you are experienced in trading then daily profits is possible. Otherwise you can get profits by investing. However crypto investment puts your capital at greater risk (main point).
Getting a rented apartment puts the tenants in their comfort zones, paying rent probably every month, half a year, or a year. They don't have to worry about maintenance, light issues, and the rest .. they just have to pay their rent and everything will be sorted out.
Meanwhile, a person who owns his/ her own house gets to live without paying rent constantly. They may rent a few of their houses to people and earn money from their belongings or sell it off... Meanwhile, they have to worry about maintenance and other stuff...
In life, the comfortable way/ route is always the least comfortable. The higher the risks the higher the returns. One cannot be comfortable accepting 8-10 % interest when they know that there's a straight path they need to follow and earn over 50%/ above, can they?
So, profits from the banks aren't all that comfortable, even considering the fact that sometimes they still withdraw from your account for maintenance and other things without your concern. So in conclusion, of course, altcoins/ cryptocurrency profit is the best profit.