Is it normal i say careless things and dont realize people care?

I sometimes nonchalantly mention or speak about bad stuff. I usually dont see these things as bad. However sometimes when I just mention it there is always someone who feels bad. It always leaves me confused since I dont understand why people care so much. I dont honestly care about this stuff but I guess I dont really have an expression either. It honestly is off putting when people have sympathy for things I view as insignificant. I sometimes ask and they usually say "Because that's awful".