Baggin trucks with air shocks.

Around Columbia, S.C a lot of people have started "bagging" their trucks on air shocks. They hook up the shocks to some maual valves and monoleaf their trucks. I was just wondering what everybody thinks about this. My truck is 3 linked on airlift bags so im not one of those peeps.. To think i could have just spent like 200 bucks to have a bagged truck instead of like 2000$.. what was i thinkin?