Stable income is not the reason for an investor to adopt the DCA strategy when investing in Bitcoin. If you are investing in Bitcoin with either the DCA strategy, lump sum strategy, or buying the dip strategy, you need a stable income that will give you a discretionary income to invest in Bitcoin and also allow you to solve your daily expenses so that you won't have to run to sell your Bitcoin investment anytime you are in need, which will one day get you off the game, and you will be left with no Bitcoin in your disposal or self-custodial wallet. So having a stable income is one of the keys to a long-term investment in Bitcoin.