From rather casual research, Poland is getting about 8 hours of daylight right now, whereas Malta is getting about 10 1/2. And it is warmer also.
Similar numbers for Sicily and lots of other interesting places south of you.
I also live north of the equator. For winter travel, those extra hours of daylight and warmth can be important. For warmth, ocean currents are also a consideration.
You did mention not trying to get away from the cold, but it is really nice to not have to pack/carry/wear the heavier clothing. And daylight is safer.
Ordx notes the cost of living factor in your calculations. Also vital for budget travel.