Kookabat
Congrats Iain - you didn't choose an easy way to learn. More fun that way I reckon, should have done the same thing (ab initio on tailwheel) myself.
You've correctly pinged my motivation - to have fun. I expect it to become a means of transport at some future point, but I've been dreaming of flying for a long time and there's a romance about tailwheelers that's hard to beat. It's also meant to teach good rudder skills.
Of course if someone had taken me aside at the start and told me it would take about a bazillion circuits to learn to keep it straight I might have thought twice.
If you want a laugh over some of my earlier efforts, follow the links back from my solo flight here:
http://www.iainhosking.com/flying/training/lesson23.php
Iain