L.O.L. I can't believe that is actually a question. Why lift a 2wd? How about, why lift a 4wd? What's the point of any of it right? All you're doing is decreasing its ability to tow, decreasing the ease of access to the bed, etc. For what? So you can take your big bad 4wd through 3 feet of thick mud and have to get pulled out? Then continue to brag about how capable your lifted 4wd is? My truck lifted is no less capable of doing truck things (towing, daily driving, the occasional off the beaten path adventure) than a 4wd counterpart under my possession. I would never take any truck I paid for through anything that I think would need 4wd anyways. I don't mud my truck for fun...anymore. When I did, I never once needed 4wd. Not once. 2wd serves every need I have. The only thing 4wd has over a 2wd is I typically like the way 4wds sit.
Its a truck. Lift it, lower it, keep it stock. Its all acceptable.