Exactly! As a kid going to the football, the atmosphere, the noise and the 'banter' of the adults was what made it exciting and a superior experience to watching a game on telly. As an adult, for many of us getting a little bit tipsy and having a sing song is part of the day out. Sometimes this can involve swearing, and short of making everybody adopt leeslover style banter ('Keeper! I respect you as a man but your ball-handling skills are suspect') football is always going to be like this.
There always needs to be politeness and respect, but the tone of some of the comments leans a little too much towards the puritan side. As said previously, the solution must be to keep the family areas that some clubs have (and perhaps allocate one for away fans) and let people choose what kind of experience they want to have.