Martin Shkreli said $100k is not enough money to start investing, you can't do anything with such a low amount. The reason for that is because investing is competitive, you have to make smart decisions. To make smart decisions you have to spend a lot of time and effort evaluating companies you want to invest in. If you actually spend this time and effort, you won't have enough time for anything else. With your $100k you will be happy to make 10% in one year, so it's $10k per year full time.

You need millions of dollars, then it starts being worth it. You should listen to Martin Shkreli, even though he is in prison for fraud, because he knows more about investing than almost anybody here on HN. Most people on HN will not be able to record 1 hour video talking about investing, let alone 35+ of them. They don't have the stamina and knowledge. They also don't have the results to back up their advice, unlike Martin Shkreli.

It seems foolish to think that you can spend just a few hours per week and think you're going to beat the market.

I don't want to insult anyone, I myself don't know much about investing. The reason why I mention Martin here is because his videos on youtube are very accessible for layman people who are uninformed about the market.