You have to pick:

Thinking about this raised a question; if it's always winter in one hemisphere, is it always summer in the other? If so, this pairing is basically just asking which hemisphere to doom with eternal winter - "yours" or "theirs".

If it was always winter we'd soon suffer terrible food shortages, and other less critical but still significant economic problems.

To me the question is more interesting on a philosophical level, and its more about what you gain than what you give up. That is, would you rather give up winter (always summer) or give up summer (always winter. For some giving up winter is obvious, but others really like winter. But do they like it as much as summer?

I said that backwards it should have been "more about what you give up than what you gain"

A lot of construction shuts down in the winter. How would stuff get built?

I live in florida, and winter is usually the 60s. I would ride my motorcycle till the day I died

plants would die off if this happened.

@bryan.derkson not to mention that days would be shorter, forever+30 days of night anyone?

Eternal summer wouldn't work either. Most plants and animals require fall, winter and spring to thrive. Humanity couldn't adapt quickly enough.

One final summer for mankind.