I think the thing is that you are being very dismissive of something you have no experience of.
I'm not a regular at Scotland games but I do support Scotland and any time I've been it's been an amazing experience. It's different from club football. Club football is all about agendas, factions, tribalism etc and that's fine. Who doesn't like a bit of that abrasive side of football?
However there is something really refreshing about going to a Scotland match and having pretty much everyone on the same side and behind one team. When Scotland win or Scotland score at a packed Hampden there is nothing like it.
There's different sides to football. I've been following Motherwell home and away for nearly 40 years now, but I also go to Scotland matches for the reason above and I also like to pop along to random matches, usually lower league games, and just sit and watch as a neutral with no real stake in the game. Last time I did that was Alloa v Partick and it was a great game with one of the best goalkeeping displays I've ever seen (Jamie McDonald had an incredible match).
I'm going to sound like a mum at tea time but 'just try it, you might like it'.