I recently heard you mention a good comeback when someone tells a stay-at-home parent that they're "so lucky." You said, "No luck; just a choice." I wouldn't trade my staying home for anything. Sure, it's a sacrifice, but I don't need a fancy work wardrobe or expensive shoes. I clean my own house, eat peanut butter for lunch and manage a budget. Because we're on one income, we say "no" to a lot of things. We've made that work for 20 years.
Each time I wonder if it's time to re-enter the work force now that my kids are older teens, it makes me sad to think of them coming home to an empty house. I love making them healthy snacks after school, hearing about their day and preparing dinner for all of us. They may not appreciate every moment, but I cherish the time with them. I'm never bored.
I have no shame in being an at-home mom and have never felt I needed the "fulfillment" of a career. I have three degrees and feel my biggest accomplishment is seeing my children thrive! So, it's not luck -- just our choice and sacrifice along the way, and it's all worth it.