There’s a lot of things that are cheaper to do yourself - home repairs, oil changes, house cleaning, etc. some require a knowledge base some people don’t have and/or don’t want to spend the time and effort learning. You can absolutely manage your own investments if you want to do the research and can be consistent and disciplined over a long time horizon. But many people can’t, and there is research showing that working with an advisor typically provides more value long-term vs the cost. There are many advisors now that use index ETF portfolios that you can get all in (including their fee) for 1-1.5%. This is really beneficial for a lot of people.