Frequently I see people complaining about garter stitch lace; especially when they are knitting lace shawls in the round. The very thought of purling entire rows seems to make a lot of people blanch. Likewise many people complain about the long purl back rows when doing stockinette knit back and forth.
Now I don't mind purling that much; well, not unless I'm doing a 1 x 1 rib and then more because I can't count. But I've also learned to knit backwards (or purl backwards - depending on how one looks at it)- which means a number of things:
a) when knitting flat I don't turn my work, I just purl back/knit back backwards. It's faster and more convenient then turning and purling, partially because when I "purl" backwards I'm scooping yarn rather then throwing.
b) in the round, I can TURN my work and knit backwards/purl backwards for garter stitch - again faster.
C) when knitting on edges - I don't have to turn the work after each of thsose short rows.
d) it confuses the heck out of people watching my knitting! (added bonus)