Most of the use of my leaf blower isn't really for blowing leaves, at least ones the size where rakes are useful. I mostly use my leaf blower to clear the sidewalk and streets from lawn clippings and other debris from mowing. Those clippings are pretty small, most rakes wouldn't be as effective as a leaf blower at clearing.

I also use it to blast out the dust from the garage. Its a lot faster at clearing the dust and cobwebs out of the garage than manually brooming it all.

I am mindful of the level of noise though. I use an electric one which is way quieter than gas ones.