I light mine all the time with one hand (unless I need something to cup around it for wind).
They are still made in the US (Bradford, PA), (
http://www.zippo.com ) and still repair them for free (forever). I've even bought some old ones at an Estate Sale, and sent them off to be repaired (only cost is what it costs to ship it to them).
Other than the problem with over filling (yes, I've been burned a couple of times also lol), they are the most reliable lighter. I've carried one for more than 40 years, and have several now. The thing (at least for me) that breaks the most is the clip in the hinge (I've also had the weld holding the hinge break once or twice)... but, every time I've ever sent one in, it's sent back like new, and they usually replace the innards of the lighter returning the old innards.
I also had a problem once with buying the wrong flints for them. For some reason zippo flints work much better than ronson flints... When I talked with the guy at the pipe shop (where I bought it) he said to always use Zippo brand flints, and I've never had a problem with it since.
I promise, if I ever buy another lighter (some unique as I have "enough" lighters) I'll [B]only[B] buy Zippo!
Pat