The problem with an Aldrin Cycler https://en.wikipedia.org/w/index.php?title=Aldrin_cycler is that you pretty much have to leave it unoccupied for several years at a time because the planets are in the wrong place on most orbits. Then after 20-30 years the gaskets start to leak and the electronics get glitchy. Look up how much elbow grease it takes to replace the expired components on the ISS over a 5 year period.