Yes, its essential that when you decide to invest, you should have at least a consistent means of income to fund your investment, most especially that we are talking here about DCA. Whether it's a physical demanding job or a means from online, that does not matter as long as you can afford to invest using your own spare money.
Don't blame yourself for their reactions, they are just used having traditional investment. But if you still not pursue your investment this time knowing you're capable to make it happen, surely you will regret it when bitcoin investment has gone too massive for everyone who dare to trust bitcoin.
Hmmmm... that is right before investing it is important to have regular income. This is especially good for strategy like (DCA). We need to have stable financial situation to invest without borrowing money or struggling financially. It does not matter if we earn money from physical job or online work as long as we can invest with money we have left over. Do not let others doubts stop us as they might be used to traditional ways of investing. If we can invest in bitcoin but do not we might regret it when market grows and becomes popular. It is important to make smart financial decisions and take control of our investments.
That is one of the basic requirements to become an investor, since someone that does not have a regular income cannot really concentrate on saving and investing for their future, when they do not really have the means to deal with their present situation at all, still there are many people that ignore something as simple as this and decide to become investors anyway, and it is obvious such persons fail relatively quickly, as even the smallest crisis is enough for them to be forced to sell their coins.