Being in love is great for about two years, and then those feelings change. That can be a good thing if a couple still like each other, are committed to each other's well being and happiness, and have the maturity to keep the relationship healthy and balanced. Or a bad thing if each partner acts in their own interest most of the time. Most couples find a middle ground that they can live with, but grow to resent their partners. Can't live with them, can't live without them. It would be better if marriage was not forever, but a contract that was up for renewal every couple of years. Given that living arrangements, assets, and children can be involved, this is difficult to do. If AI and robots take over all work and we can all live independently on a universal basic income, it will change the nature of committed relationships. I can see that happening in the next few decades, but I think it will be quite a while before robots replace partners.
It is easier in the hobby world. You might still have some heartbreak and disappointment (I chose my handle well, I can be an Idiot), but after a little grieving you move on to new experiences, often better ones, and you learn some lessons - hobby maturity.