back in the day ( pre wife and kids ) I would set up a tank and leave it for years. The only time I would do a complete redo would be after a complete die off. Not sure if board is the right word but I would get the urge for something different after a while and would proceed with a new setup. The problem here was I ended up with 20 plus tanks in a small apartment.
I still feel the same now as I did then. The difference is that at my age, I forget what everything looks like so every morning is like Christmas.