Time and money main reasons as I am interested in AP(my last imaging was with Olympus OM1 and Techpan 2145
). Also the amount of computer time required processing scares me off as I spend enough time at work using a computer DCS to run machinery and I don't want it to encroach on my hobby. I still read a lot of AP posts on this forum though and like to look at amateur images.
Cheers Richard.