So your advice is to barely use and barely touch the hardware you have. Well yeah, that would increase its lifespan, no question. It'll all still break though. Everything does, no matter how well you keep it. It also sounds like you've traditionally gotten rid of things before they've had the chance to.
And gotten lucky. SSDs fail, not as often as hard drives, but they do fail. This is not an issue of maintenance. It never was.
Moreover, when SSDs fail, unlike with HDDs, there will be no warning, and emergency retrieval of data may be completely impossible.