On the subject of everyone collecting differently, I find that the UK is very much a pre-decimal country. Anything after 1971 is not really considered a coin worth collecting and many of the collectors are rather snobbish about this fact.
The US, probably because of the continuity of the coin series from way back went to the modern times, the fact that you can get a
Buffalo nickel, or a wheaty in your change, and you do, even I did when I was working over there, makes it more fun.
The only thing to look out for in the UK are the 1983 coins or the 1998 and 1999 pound coins, because they did not circulate, and you never get them anyway.
There has been some interest in the new coins, but I live out of the country and have all of them bar the 50p. The only other thing are the £2 coins and 50p commemoratives, and some are getting rather annoyingly hard to get your hands on. You may see one of a type if you are luck.
In the Euro zone, collecting is about the other countries, Finland, Greece and the new ones. I live 10km from slovenia and we hardly get any of their coins, but all I need at the €2 commemoratives and many of the new euro map design coins, along with cyprus and malta which I will probably buy some time.
People actually like collecting these and there are dealers purely for euro coins.
I guess it is not strange, people collect what is interesting, and rolls may be interesting to a lot of people. I wouldn't have them, I am an album person, but I also buy the cheapo (or not so much) UK coin set every year, a sort of investment/owww sort of thing.