[His reasoning is partly sense and partly an excuse. It’s true that he and Anakin have talked about it, but Obi-Wan wasn’t entirely comfortable with the way things were. If Padme was to ever come back, he would back off, because no he’s not a home wrecker. He does love Anakin though, and is doing his best to make sure he’s happy and doesn’t fall to the Dark Side. That’s his entire motivation. Marriage though is taking it too far in his opinion.]

Your powers require certain responsibilities don’t they?

It’s the same with us. Ours are tied directly into our emotions and how we feel. It may seem cruel, but if we indulged in every whim and desire, our own selfishness would cause us to use our abilities in a way that could harm others. Thus we are called to live a selfless life to avoid that slippery slope.