Ok my good sir, very quickly I would say A) Being capable with the saw in all positions is a good thing. B) Ya know the 'cutting thru dirt/mud' trick to keep saw sharp? Frequently ime, backchaining is a good way to make or finish that cut. C) Finishing a bucking cut after a log has been rolled over to access the remaining wood to be cut, is far easier, faster, and more accurate by back chaining. I posted a thread on that awhile back, no one could figure out why that is but most agreed it was true. D) Frequently it is key to direct saw chips away from you by backchaining. E) Must be many more reasons for it that I am not thinking of right now.