To leave DH and DS1 at home and take DS2 on holiday?

[Strugglingtodomybest]

I'm planning our summer holiday and I thought that Vietnam would be interesting and fun for two weeks. Our family consists of myself, DH, DS1 (15) and DS2 (13, would turn 14 during the holiday).

Over the years it has become apparent that DS1 and me love travel and adventure, whilst DH and DS1 don't, in fact DS1 has said that he'd rather stay at home. DH said he's happy to go if it makes me happy.

So would IBU to leave them and just take DS2?

I should point out that DH has told me what his ideal holiday is and I've told him that if he arranges it then I'm happy to go on that too. DS1 just doesn't want to go anywhere.

I'm struggling with this as I've always thought of the summer holiday as being a time for a family holiday.

My DH took dd (then 13) on a similar holiday and she loved it. DS has never been as interested in travel as DD and I wasn't especially interested in the places they visited - although after hearing about them, I am now! DS and I went to visit grandparents for part of the time and it was fine.

DH has offered to take DS on a special holiday when he's 13, but not much interest so far.