My maiden name is McArthur so I have ancestors! Went first when I was 14 with my grandmother and just finished scanning all my old slides from that trip...including me standing on banks of Loch Katrine and Loch Lomond.
Then I took my DD for her college graduation present in 2001 but the front end of our trip, and most of Scotland, was missed because of 9/11. Took her back in 2003. Then took my son in 2005 and my DD, SIL and DS and I all went in 2006.
We simply love it and are huge history buffs so Scotland and all of Great Britain are amazing vacations for us.