I generally tend to not have that feeling.

For me to feel like it is wasted is to put on a definition of the time period that wasn't there. It is internal personal fan fiction at that point.

I don't feel like I missed out on anything.

There is also the added point of whatever position you take, it is always a trade off with something else.

To be awfully reductionist. The fat people envy the skinny because their health is in check, the skinny envy the fat because they have a sense of care free freedom.