Yes, that's the critical factor that I meant.
For long it is so that it's no give and take, it's only a take from you and you'll get tossed, thrown away, when you're not useful enough anymore.
That's why I don't get the unconcern that people the same age always showed.
I know it will be so and there will be no exception for me (why should it?), so then why should I invest all my powers into this?
This seemed somewhat masochistic from me to do, if I know the final result already years before...