By alternative income I mean if you are involved in a job or business, a portion of discretionary income from that can be stored in bitcoins through DCA method and till your retirement you will have a huge stash of bitcoins.
I have thought about that too, especially since I do not have a company job where if you don't have it then you are not entitled to retirement, the truth is that because of the current situation in my country which is very bad, so it is better to do freelance work to be able to have or live better day to day, however, with bitcoin a retirement with bitcoin is much better than by any other method, I prefer to buy bitcoin gradually than to contribute to social security in my country where every month you have to pay money, instead of giving money to a government, it is much better to buy bitcoin and that's it, no matter what the price is, buy every month.
Merging two situations here is difficult meanwhile both ideas don’t match like I’m trying to say bitcoin investing is far different from social security but still it’s best we make the best decision for our investment and one can only make such decision looking at their financial capacity. Bitcoin as a retirement plan should be done when the person is still receiving monthly or weekly salary at the early moment, bitcoin investment has a lot of benefits compared to other investments because there’s a possibility your investment will grow and yield profit for those considering if they should save using bitcoin.