Am I a selfish parent?

I was with a whole group of other mothers earlier and ALL of them seemed to make comments or agree that I was selfish or a bad parent. Saying things like "your motherly instinct isn't very strong" etc.This was triggered because I went away with my husband to go skiing for 1 week, and left our children (age 2 and 6) with my sister and her family.We felt that taking young children skiing was not a good idea, but it was important for our relationship for us to go away and be able to spend quality time together.My sister and I regularly look after each others children, they all get on well and are comfortable around each other. I was sure that it would be fine to leave them with her.My confidence is being constantly shaken by other people's comments about this, and about other things that I've done in the past.I am 5-10 years younger than a lot of other parents that I know. I'm just doing things that they all did at my age, but I'm having to fit it around parenting. I had my first child when I was 18 so haven't had time to find myself, it's important for me to catch up on experiences that I missed out on.People view this as selfish, even if I leave my kids with family/friends for 1 evening so that I can go out.I thought that it was a positive thing that my children spend time with extended family, other adults, other children. Surely they will grow to be more independent than children who never leave their mothers side.Am I wrong? Am I expected to stay at home 24/7? I honestly feel so awful when people are criticising me, but I can't work out if the criticism is justified or not. via /r/Parenting http://ift.tt/2nZTVVl