A good unit, good people, with the same objectives, determination and mindset is important whether that's in the field or back home and I'm fortunate to have exactly that.
People get old, it's crazy how/why people don't see that and plan more effectively for it but the reality is so many do not; running and gunning at full tilt doesn't last forever, not in its original format or pace, but with good planning one can keep operating at a good level, meaning have a good life. Health is one aspect for sure, but financial health factors in too, as does being (more) self-reliant...like the end of my posts always say, design and create your ideal life, don't live it be default. Really important stuff.
I looked after both my parents until their ultimate demise, one was cancer (she had a horrible death) and the other dementia/cancer - both situations were tremendously challenging. That, and the death I've seen elsewhere, helps me live better in the present but also actively plan ahead as I want a good life all round, not just in the present.
Glad to hear you're thinking about it and planning...that means you're well ahead of so many people and will have a good chance to rock it into your later years. For the record, I'm still running and gunning, literally with guns, and in most aspects of life from relationship, career, financial, emotional, spiritual, enjoyment/fullfillmemt, social and in other ways...I think being able to truthfully make statements like that comes from a lot of effort, hard work, planning and execution and I'm happy I've taken the responsibility for those actions...and it's great to read you're doing the same.