Revisiting this thread after two years I see how quickly things change!
In my first post to this thread
I had only two 64-bit machines in close proximity.
I am mostly constrained to using what I can intercept on the way to the landfill and only received my first 64 bit hardware within the past few years (guessing about 2010).
Today, in the room with me are eight 64 bit machines and six 32 bit. Not included in that are two 64 bit Dell laptops and two 64 bit towers that I have received recently but not yet put to use beyond testing and initial install of Slackware 14.1 (32 bit).
Out of the above mix most are running 32 bit Slackware 14.1, but four are running Slackware64-14.1 and one is FreeBSD 64 bit. Most of my new "production" installs will now be 64 bit Slackware or FreeBSD.
I also now run multiple VPS's with Slackware64-14.1, so guess I should count those too!
So my own balance has definitely shifted heavily to 64 bit. I still run 32 bit, but I see a definite trend developing!
All that said, my personal workhorse and perfect laptop is still a 32 bit Toshiba ca. 2005. It ran Slackware 12.1+ until a year or two ago. When faced with replacing it I decided to instead install new 1-TB drive, max out the RAM and fix a few flaky keyboard keys... now running Slackware-14.1 until the wheels fall off!