I haven't been riding my bike to work much lately, not so much because of the weather, the last time was the first big snow storm in December. It's just that I had another option, my brother loaned me his truck so I drove.
The funny thing about riding is that thinking about it is always harder then doing it, but once you're out there you just pedal and get where ever you're headed. It's hard to get new riders to beleive you when you tell them their commute won't take much longer than driving until after they have done it a few times.
So if you're thinking about it, quit thinking and start pedaling.