It's not just fun, it's overall more happiness for me. I do enough daily, I think, so that I don't have any negative effects, both short and long term. For example, I could have plain Greek yogurt. That's good for me but I add a good deal of honey to it. When I do that becomes most of my sugar intake for the day and I'm not unhappy at all about that. If I just had it plain I would have missed out on the "fun". The fact that I walk for 1 hour outside almost every day, which is fun, "hedges my bet".