In all seriousness, Factorio is predictably _extremely_ addictive. I highly recommend beginning either on a long holiday weekend when you have no other obligations, taking 1-2 days of time off, or just not playing it at all.

I honestly don't necessarily regret the time I've spent playing Factorio because it is legitimately fun, but it will claim a very high priority in your brain for quite a while once you pick it up, and will push other things out of the way.