These are effective ways to build wealth over time via continual additions and compounding. They’re also rather boring, and there’s absolutely nothing wrong with that.
Some people crave a little excitement or a chance to make outsized gains, however, and that’s where the concept of play money comes into play. Who knew investing could be fun?
Ideally, it’s a fairly small allocation, although I feel it’s reasonable to increase the percentage as your net worth increases, particularly when you’re financially independent and then some.