That’s almost always a better strategy anyway. Picking stocks on average loses to investing in the whole market even for expert, full-time investors.

You don’t need to know everything for the next five years. If you expect to spend money, it makes sense to save it. If you have unexpected emergencies, that’s what an emergency fund is for. If you have an unexpected change in priorities, it’s not the end of the world to cash out investments. That’s the point of them! There’s just more short-term volatility so it might make you loads of money but also might lose money.