Baby wearing mumma's!

Hey girls! 
Looking for bit of advice.  I really want to get a sling to carry my baby every now & again. I thought it would be a lovely idea & sometimes much quicker option then whacking out a buggy. 
However .. Became little disheartened by my partners nan, who said it would be irresponsible and dangerous. As if I fell over I could land on the baby & kill it?! 😐😐. Now feeling confused X