Truth be told, I don't find myself nearly as frequently as you do in cold, hostile weather - Lisbon, Portugal is a far cry from Warsaw! So my view of cold weather is very, vey romantic, eheh. Whenever I travel to countries with colder climates, I do have the time of my life, but then again I know those conditions are only temporary... :)
X100s is a fantastic tool! Street photography, more than any other genre, is like treasure hunt - you are trying to discover and capture all the photographic opportunities that are around you at any given moment; for this reason, it can become extremely addictive! But how can one not succumb into the addiction when one looks at works from Cartier-Bresson, Fan Ho, Kertész, Metzker, Saul Leiter, Fred Herzog, Alex Webb...