Well let me try... Leo is someone who is successful for -I don't know- some decades now. I think many of us had a (huge) crush on him back in the 90's (nothing I have to explain, I think LOL). I grew up with him and his movies and yes of course this fact matters. How can it not? And yes, I'm still attracted to him. To be honest I'm just bored with all the Chrises (Pines and Hemsworths and what are their names), playing always the same superhero dude while looking freaking perfect with all their muscles. Most people aren't able to say who is who, I mean, that says everything already: There is nothing special about them.
Beside from his model attitude -but honestly he lives probably the life most in this forum are dreaming of so how is it strange that a man likes young beautiful women? (show me the man who doesn't)- Leo seems a pretty decent guy to me who don't know how to dress himself (he's wearing the same stupid clothes like he did before his super stardom). He seems like someone you can have a serious conservation with and lots of silly fun the same time. He just lives his life in the best possible way and gives (most of the time) no f*cks what others think about him or his look or body. It's something very refreshing particular in a world where people are obsessed with their look. Now imagine the self-confidence you must have just doing your thing in such a world - it's like none of all the rules apply to him. So the real question is: How can you not admire him? (And I think most people do more or less or in secret otherwise he wouldn't capable to hold that level of extreme success for such a long time).
I've met him once and believe me he isn't unattractive at all