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.
Saving some Bitcoin for the long term can be a wise decision especially considering its increasing mainstream adoption and the potential impact of the halving event. Separating a portion of your profits for longterm hodling is a good strategy to ensure you have some funds available for future success.
For that I have some money and I have already invested in Bitcoin and now I am using DCA method and I have decided to hold Bitcoin for more than 5 years. And I am sure that After 5 years I will be in profit because I believe in Bitcoin and in myself too.