There is no excuse to avoid learning these things, even just for context and appreciation for the specialization that it takes to do some things properly.
Absolutely and, when one inevitably can't do it, like through illness or other. When it comes to finance, it allows for both people in the relationship to be part of the decision making process.
eliminate, automate or delegate! ;)
delegation rarely works for me. If it is something worth doing, do it well. Delegating to someone who isn't interested enough to do it well, means I have to do it anyway - just at a greater cost.
That is a good way to look at it though! At work, I am trying to automate some processes in the organization to save time and effort for people whose time can be better spent doing their real job. It is fun, but I also get pushback on it, because in order to automate, there has to be common processes in place and many don't want to have to be confined. It is always a tradeoff.
Process is a special kind of business discipline and worth every moment spent defining and refining. Culture either kills it or proves it can handle a scaling up if not.
Also, running a family like business doesn't work very well either. ;)