A 30 year difference is a very, very long way from being perfectly normal. It’s an extreme outlier.

for perspective, a lot of HN readers are under 30 or in their early 30s. 30 years is about their entire lives and is NOT a `perfectly normal` difference.

>What is the use of having money, if it does not gives you advantages ?

such a weird thought. i can think of many reasons: to have fun (i.e. fritter away), to spread advantage to other, to use to build something (that won't necessarily confer advantage later).