Dennis: "I think it's wrong to portray that Lewis left this team."
Ultimately, Hamilton signed with Mercedes, but "I think it's wrong to portray that Lewis left this team," Dennis told CBI magazine.
"At the end of the day, you end up with a situation where you're going to separate if the circumstances aren't right. Life isn't about one person deciding anything. It's never that way. It's about circumstances," he added.
Indeed, Hamilton's departure has been portrayed as a bitter loss for McLaren, but the stoical and admittedly emotional Dennis insisted: "Everybody says 'Am I bitterly this or bitterly that?' What? I'm a realist.
"Did we have the ability to create a situation where we could have stayed together? Categorically, yes. Would that have been the right thing to do? We didn't think so."
Hamilton's successor is Mexican Sergio Perez, who moves from Sauber.