Do not weep do not wax indignant. Understand.
You never know what motivates you.
To know oneself, one should assert oneself.
The wise does at once what the fool does at last.
Who seeks shall find.
Either you run the day or the day runs you.
It's always too early to quit.
Go for it now. The future is promised to no one.
If you think you can do it, you can.
Expect problems and eat them for breakfast.
There's a lot of interest from the medical community on how things develop in microgravity, and the hope, later, that is expected to apply to what the changes are in humans as well.