According to one source, charging from 90-100% ten times puts the same wear on the battery as once from 0-100%. So, why not just plug it in, have departure time use available to maximize your range, and the optional cabin conditioning without losing battery charge in the process?
Generally, when mine is home, it's plugged in.
If it's going to be cold out, you don't want the battery SOC to be sitting there at a low state or you could risk having a dead car in the morning, and potentially damaging the cells.
2011 535i x-drive GT, 2014 i3 BEV