One of the reasons I stopped running for a while was the need to spend my time doing other things. The time we devote to training is a much discussed topic and there are many strategies for fitting training around your life.
Not all these approaches are practical for everyone, for example I live in a rural area with no lighting so night time running is not a safe option.
However, one of the things I noticed when I wasn’t running is that I didn’t appear to gain time. Yes, I may be using my time differently, but I still had things to do every evening and weekend.
It seems that running makes me more productive. On the days I run, my work gets done more quickly and I have more energy for the countless small things that have to be done around the house. Th flood of oxygen and endorphins also makes me better at simply scheduling and organising my day ahead.
Now I grant you this may not be true when you are marathon training and head off for 3 hours at a time 3 days a week, but for now, my 5 and 10k runs appear to be giving me back the time they take.