Winter in Germany and Netherlands can be a bit tricky, depending where you are. I've been in both countries, in October in Germany, November in the Netherlands and wind and rain made my days a bit difficult.
I left out the tropical weather from my post as it was getting too long, but humidity would be a factor to consider.
You are right that wherever you live, there are pros and cons, so that's why I see a compromise, between summer and winter residence, if you can afford it and you're not tied to a single place.
I see you chose a mix between Spain and Indonesia :) Interesting.