I was at quite a few (not all) of those matches.
It is difficult for people who weren't around at the time to understand the mindset.
It was almost a case of 'we are coming on to your manor and we are going to take liberties......what are you going to do about it?'
Hard to explain
In a nutshell it was a different time and era mate, it was well gloomy back then, a very angry and violent time in England for working class people. we lived on depressing run down council estates which were nasty violent shitholes, there wasn't a whole lot of hope. it was a symptom of the age we lived in and football as a working class sport was our chance to vent and be part of something.
it was tribal war really, away you had to go prepared to fight and put the fear into them first and see them off or most likely come unstuck and, get done as everyone on their manor we were invading that day was out for us, football fans or not. Every town that had a football team also had a bunch of geezers out for you that was protecting their manor and, wanted to see you off and hurt you from the minute you arrived until you went home. You could get seriously injured or killed back then at football, chivved, slashed up, glassed or a steel toe cap DM or a brick in your head or 50 blokes kicking the shit out of you wasn't very nice. we ve all had a walloping somewhere so it was let's try and have them before they have us IMO, and it was best to be mobbed up for that reason and try to do them first.
Plus off the pitch rivalries just intensified over seasons of fighting, like if you got a kicking somewhere next time they come to the Lane then their getting done or when we go back to their place were gonna destroy them and their manor because of that and it just builds, like with Liverpool thats one that got well out of hand IMO from the 70s at Anfield to the FA cup at ours 80 and then the car park after at Wembley 82? It was a bloodbath, also with West Ham over the years it just got really evil and went far beyond football, home visits, gangland threats , serious use of tools, East Ham etc ( I always believed the real war was with them over Woolwich and Chelsea, they were the real rival to me and then Man U). And then at home, same as, your not letting mobs come on your manor and take liberties either your going to defend it and try to see them off sharpish.
Back then football was a tough working class game and culture for working class people and that's where we got our weekly working class frustrations out, it was our stage to perform, and our culture and the powers up top didn't care about football then it was let them fight each other better them than us.
It's a different age and era now, football is a money game for the rich, it's business, plus young people have more options and things to do and have more money, they will never understand as you say, like bunking the train to away games, then bunking in the ground etc steaming their end , back then we had football and music as escape options and that was it. Though none of these kids today will ever experience that rush we had. And we will never see anything like that again. The comradery , huge mobs, piss ups, running from the plod, getting a kicking, mass tear ups all over the place, your mates, you got to run wild on the terraces and in the streets for a day, the adrenaline rush still today can't be matched, then the actual game itself because we did support our team, the songs and the atmosphere, the end of day stories back in the pub (if you made it back and weren't nicked or in hospital) , good or bad, it was epic and we wasn't always victorious anyone who got in rows has come unstuck but still we went back every game to do it all again .
And i still think about those days now as pretty much they still stand as some of the best days of my life. I'm certainly glad I experienced it when it was at it's hayday late 70s early to mid 80s. Your right it never leaves you but i'm too old, wiser, moved on and stopped around 84 too many nickings and But given a time machine I would go back.
And yes someone needs to make that movie about Tottenham Boys, sick of corny arse ICF crap fantasy movies zzzzzzz. You could do an epic movie just on Ks coach lot and their adventures let alone us lot on the train to away games. Sorry for long post lot to cover