Sort:  

One of the nice thing of darktable is that it is free. It looks like to lightroom and it have similar functionality. I don't remember if there is available verison for windows but you can easy google it. And yep you are right. For the same reason I keep my windows too...but recently I begin to get used with darktable. You have nothing to loose so if you want, you can give it a try.

I can lose time :D that's my fear
I just install it right now

Yes.. it has some risk but..in the end you can win more :) I hope to work fine for you. I use it also from soon.

will process some photos tonight :D

I hope to like it. But without a risk there is no win :)