Dudu - I never thought I would have children and was working on my master's when I became pregnant. I never found the master's necessary to earn money, but I did find being a mom to be the most absolutely wondrous and joyful thing I've ever accomplished.
Screaming kids come from unsettled parents, usually. If you are calm and happy, your kids will be calm and happy.
To this day, I can honestly tell you that my daughters have made my life important. Work, not so much. I don't define myself by my job (which pays nicely, btw). Being a mom taught me what love means. It taught me unconditional love. Amen to the good doctor BerryGerryBerry when he says:
Nothing turns you into a better human being than being a parent.
Wishing you all the best, whatever decision you make. Happy life!