pleasure-pain versus pain-pleasure

I was thinking the other day (yeah, yeah) and realized that most decisions in life boil down to a simple choice - pleasure now, pain later versus pain now pleasure later.

So, while the generally accepted view is that Life is short and we should live in the Now, we must also remember that thanks to better healthcare and stronger bungee ropes, Life can actually stretch for a very long time.

So question is, which is the logical choice to make?
Slog now to enjoy the spoils at leisure later, or have a blast now because the future might not even happen?

There is a third option which is to take pleasure in the pain in anticpation of future pleasure.
But the only two types of people who do that are Ayn Rand's heroes and mental patients.

Then of course, it was time to watch T.V. and I stopped thinking.