I am not questioning which format is better.  I am simply looking for simplicity and flexibility. Most programmers dont know how or are too lazy to provide flexibility.

A few years back I wrote an image builder using the GD lib and even though I was learning as I went, I wouldnt dare build a bias app, simply because I felt one format was better than an other.  My lib handles as many formats as possible.   I dont like making my users jump through hoops to upload a picture.  I am the programmer, thus, I do the work.