Yeah I have like 3-4 chargers I leave plugged into different areas of my home I know I use my computer often at. It saves the trouble trying to plug and unplug the adapters especially when some of my wall outlets are behind furniture. I've never had any issues with any of these adapters, though from a power saving perspective, I know there is some power leakage (so basically there is some minimal power draw).
For on the go, I have another adapter, but I never use this one at home.