The idea of growing up is broadly a lie or misconception. Some people realize they are now responsible for themselves and perhaps even others, and that is pretty much the biggest change psychologically after puberty. A lot of people don’t have that realization or much great impact from it, so yeah, a lot of “grown-ups” working jobs are not all that different from highschoolers.

If you are trying to access several different services through the internet to your home network, you are better off setting up a home VPN than trying to manage multiple public facing services. The more you publish directly to the public, the more difficult it is to keep up with everything; It is likely needlessly expanding your threat exposure. Plus you never know when a new exploit gets published against any of the services you have available.