different worlds

I haven't posted in ages. I couldn't find the time and motivation to share my thoughts here. It will probably occur increasingly rarely. I was expecting this...

But now, triggered by something I said in my guild chat, I decided to put this thought out here.

I have an acquaintance. A friend... I wish there was an equivalent for the word "kolega" in English. He trains at the same dojo as me. However, he refrains from our activities and he doesn't really grasp Aikido.

From my many talks with him, I have come to realize that he presents a certain worldview that I observe - in a way you would observe a wild animal out of its natural habitat.
His obsessions are partying, liberal amounts of alcohol and fucking girls. I am not exaggerating when I say this. He is indulgent, he lives from party to party. He is obsessed with building an image of manly strength. He always carries arms with him - a baton, perhaps a knife. He smokes cigarettes, of course, and prepares his own wine.
When I tried to explain to him how I felt about these things, he wouldn't understand. I frequently felt that we operate in completely different worlds. I am an alien being to him, with strange ideas such as having a steady girlfriend (I don't have one, but I digress), not partying every week and being careful with drugs (alcohol and pot).
About the first one - he genuinely asked me this: "Seriously? You want to be with a chick for long?" I was like, well, yes, I do - and he found this answer somehow dismaying.

He is living proof to me that it is, indeed, possible to meet someone who is completely alien to your world in every way. He reminds me that this bewilderment is mutual. I am somewhat surprised that he actually tolerates me despite how different I am. This is a good side of his. I could've met someone like this who would have simply rejected me entirely.