Yes, if a person plans to hold bitcoins or starting DCA during the time he is single, he can definitely benefit in the long run. Every person should make a prior plan to manage their life, especially from the financial point of view. One can accumulate as much bitcoins while being single but that may be difficult when one is married. Moreover, those who want to be economically successful should focus on their financial side according to prior planning. I think singles or those who focus on bitcoin savings before marriage can be financially independent in the long run. Although Bitcoin does not guarantee profits but in the long run Bitcoin holders never lose.
Long-term Bitcoin holders never lose as long as they don't release Bitcoin at the wrong time or are patient enough when they see price drops in the market. Because if we look at a more distant time, of course there are still profits that can be taken by Bitcoin holders whose duration is not just one or two years. However, to hold Bitcoin more consistently and buy it gradually every month, of course this will not work the same for married people and unmarried people, especially if the person is a woman who already has children.
This means that a married person will always be hampered by larger monthly expenses because he has to support his own family with the income he earns. So even if he can buy Bitcoin by setting aside a little money, it won't be easy enough for him and sometimes the amount won't be that much. Because those who are not married will find it much easier to plan their own decisions when they want to buy Bitcoin with a much larger amount of allocated funds because they only think about small expenses for themselves.