I had dabbled in yoga on and off since I was 14, but discovered Iyengar yoga in 1997 and adored it!
Qualifying as an Iyengar teacher in 2000, I now hold a Junior Intermediate Certiificate (Part 2). Although I have not been to Pune (worry over mosquitoes as I'm seriously allergic to midge bites), I have been taught on many occasions by teachers from the Institute, including Gita Iyengar, Ali Dashti, Jalwahar and Uday Bhosale and take every opportunity to do so.
Guruji says "Words cannot convey the value of yoga - it has to be experienced."
Apart from the obvious and very apparent benefits of yoga, it is fascinating to explore the asanas in self practice - no two asanas are the same. There is also the challenge of doing things you did in childhood - remember the fun of handstands? Practice (and classes) have to be enjoyable, or we wouldn't bother practising.