T, dating is fine if you are upfront with the woman you are with. Be honest about your attentions. Many divorced older woman do not want to casually date. They are looking more long term.
I can see the point of the others, that dating might take your eye off the ball as you try to fix yourself. But healing is also important, and personal connection can be part of healing. I've heard that men commonly make the mistake of jumping into another relationship, and that might have been my situation -- in fact it probably was. But I did come to some realizations that I wouldn't have otherwise. And I wasn't looking for a substitute partner in the first place. I'm still not.