Jim,
I can relate to what you are saying. I believe people can look at this in a few different ways. Of course we want people to bid on our items, but when someone makes several bids in a row, it looks like shilling and could easily decrease the number of people bidding on your auction...meaning a lower selling price
However, if someone feels the need to be the top bidder everyday, I don't have an issue with that at all...this may be frustating if you are continually getting outbid, but this is completely fair and it's just the way some people like to do it.
Also, if I'm going to bid on an item I will bid my highest amount or place a snipe bid for that amount...so either way I'm not going to go higher than I originally wanted to on an item.