I never used to. I couldn't handle seeing the gain, I'd make promises that I'd give myself a few days to get back on track. It seemed like a good idea at the time, but many times over the years, it was that exact thinking that led to every regain. Regains ranging from 10-15lbs, to a gain of 80lbs. I know this may not be the case with everyone, but I must continue to do my daily weigh-ins, regardless of my eating.
For me, my weigh-ins hold me responsible for my actions. It's not to punish or make me feel bad, but the gain from off-plan eating is going to be there whether I see the numbers on the scale or not. Seeing the numbers makes me aware of were I stand and can give me the motivation to make the changes necessary.
It's not that some people have willpower and some don't. It's that some people are ready to change and others are not.
My progress pictures