I was also allergic to fabric softener when I was a child, but thankfully I grew out of it somehow. I always use fabric softener! I love it and I don't think laundry is the same without it. I also have to use separate fabric softener, I don't like the ones that come inside the laundry detergent. I think it makes a big difference in the smell and feel of the fabric!
I absolutely love fabric softener - especially because I air dry my clothes to save energy. If I did not use liquid softener in my wash - they would be super stiff and rigid when they came out of the washing machine. No one likes rough and itchy clothes.
I don't do the laundry that much because it's usually my mom who takes over. Not that I don't want to do the chore, but rather, she feels like she can do a better job at it than I can. That's true, I must say. I know that she uses a fabric conditioner and so far, none of us had any allergic reactions to it. I don't know that brand she uses, though.