Why just the old? I’m “young” and could benefit from an iron man suit

Ha, to some degree couldn’t we all? But assuming you can negotiate a flight of steps and stand up from the dining table without trouble, your benefit strikes me as less pressing than, say, that of my mother-in-law.

I just do a lot of DIY construction. Being able to lift even 100kg safely would be a game changer.

The trades would benefit enormously from such a thing.