Have running almost one year with my investing bitcoin accumulation but I start around $150 every week and raise $600 in monthly for investing in bitcoin, wish have stable financial and keep consistency investing or accumulation as much possible in bitcoin until several years later.
The ideal time to run a DCA strategy is when an investor has a consistent cash inflow or outflow, and at that point, they can run the strategy for as long as they want, up to several years, with any weekly investment amount.
Without a reliable source of income, I doubt someone would invest in bitcoin on a weekly or monthly basis, much less being consistent over a year, if that were the case.
I have already posted about this before, but it's also very important for those people who are still single, with no/minimal responsibilities in life, to be reminded NOT to take their youth and being single for granted. Take it as an opporutnity to save portions of their salary and make a high-conviction investment/HODL in Bitcoin. They will definitely have higher probability for success because they could continue to HODL through the bear cycles without worrying much about their finances.
That's what I'm doing even if I'm married since I regret for not saving bitcoin before while the price is so cheap and don't want this to happen again. Bitcoin right now had so big potential that's why its really good for us to save some for future. Bitcoin future is so good since it already reach on mainstream so I expect that more adoption will happen on it and this halving event would bring a lot of exposure to bitcoin especially if a lot of people see some outstanding price growth of this coin.
But if they can't afford to buy some amount because they think investing or trading it is more convenient to them then I guess what's more ideal there is to separate some part of their profit intended for long term hodl so that they may have some amount to use in future especially if they aim a huge success in future.
Even though I understand what Wind_FURY is saying, I would not let single versus married versus having other complications (such as a business or unstable/variable income/expenses) in your life deter you from figuring out how to invest into bitcoin, and surely when there are fewer variables, it can be and should be easier to figure out disposable income, but everyone still has similar challenges to figure out disposable income and to figure out the various uncertain aspects that come with more complexities in your finances whether income, expenses or even the influences (behaviors of others) that would cause variance.
The mere fact of complexities or even low income does not make investing into bitcoin a black and white issue in which you either invest or you do not invest, but instead likely justifies maintaining a more solid emergency fund that might cover larger amounts for more months, and also might justify smaller regular DCA amounts, and then perhaps adding to the DCA amounts in times that discretionary income is greater. It may even be the case that the people with the most complicated financial/psychological situations need bitcoin more than others, even if it might be more challenging for them to figure out how to accomplish a solid, regular consistent and persistent way of investing into BTC.