The primary advantage of the sniping software or websites is that it allows you to ignore the closing time and date of auctions. So if something is scheduled to end at 3:00 pm on a Thursday afternoon (my time - not east coast time) I don't have to be at the computer then.

And eBay doesn't really use a traditional auction structure, so using an non-traditional tool to deal with it is fine with me.

I would agree, however, that there are a lot less auctions that interest me now, even if at least some of that is due to the fact that I already have won auctions for things in the past.