My wife (married 6 years, together 10 years) is a stay-at-home parent for our two children (4, 1.5). 
I work pretty long hours and sometimes travel for work, leaving her to do most the parenting and housework. On weekends I generally pitch in, spending time with the kids, cooking, etc. 

This weekend I’ve decided to go on a long weekend with a friend to a music festival, Thursday to Sunday. 
It’s been hard on my wife, she’s exhausted from the week and then she’s not getting a break over the weekend as I’ve gone away. 

I feel bad for leaving her and it’s tough on her, but it’s one weekend away in the year. 

She’s made it clear that 4 days away is too much and that I’ve made the wrong decision. 

So what do you think Reddit - AITA?