I am not a professional lawn care guy but here is my observation. I have a 3/4 acre yard, not a manicured lawn, I do not water, never attempt to make a showplace lawn. But as far as bagging etc, never. I smile when I see the tons of bagged cuttings going into trucks. I agree if its thick, you can't just leave clumps, otherwise leave it to compost its way back in. I worked on a golf course for many years in high school and college and the greens keeper was good, only grass we ever picked up was on the well manicured greens. But we never let the grass get too long so clippings were not too think. The last couple of years I have seen several lawn guys do the routine: Mow, whack, blow, over and over. And now the routine includes blowing lawns after the mow that includes bagging. I don't understand why they blow the lawns where there is nothing to blow but I assume the idea is simply to spend a few more minutes creating noise and charging the homeowner a few bucks more for a waste of time job. I can only imagine the landscaper tells unknowing homeowners its like blow drying your hair and fluffing after the mow job. Just don't let the grass get too long, don't mow when its wet if you can help it, and let if lay