I wish I could have learned at that age, maybe it wouldn't be so difficult now. Mind you, alhtough I am an official mutant and would normally barre a B chord, I think the open chord sounds better on some songs, especially on an acoustic. I find the same thing with F too. I wouldn't dream of using a barred F in The Drugs Don't Work by The Verve, it just doesn't sound right to me. Also, as you are only playing the strings you are fingering, you can slide these chords up the neck too just like a barre. Makes F to G really easy.