Sounds like you may be depressed. My mom would tell us of how, similarly, us kids would be the only thing that helped her get through periods of depression.
Life itself, even for those of us without children, is an incredible experience.
Monetary inheritance is likely bad for the species from an evolutionary standpoint.
For example, if a "manipulative anti-social" gene was increased in prevalence because it maximized net worth.
The problem here is a common issue in game theory, optimization without regard for process. Your inheritance doesn't care how it was acquired.
Sure this could be offset for positive genes, but that's making one big assumption.
The assumption that capitalism is the only reward function for our species. That is, what other forms of inheritance reproductively compete with money?
Life itself, even for those of us without children, is an incredible experience.