People don't use them sometimes because they feel it lowers the risks of SIDS by keeping the air circulating better.
It's up to you.
Proud Mama to DS1 09/07 , DD 07/09 , and DS2 06/11 . Feeling more and more blessed with each day!
Katie - Married to Mike 06/02/01, Mom to Sydney Anne born 11/21/09 and Alice Maeryn & Oliver Thomas born 04/24/13
our baby girl (12/2008)
my baby has maybe slept about 40 mintues total napping in his own crib in 7 months, but i initially tied the crib bumpers to the outside of the crib because I didn't want to use them inside (my new mom nervousness beat out my rational side..) and they still looked cute, but now that he's bigger and i put him in there to play while i do dishes/laundry etc put them back on the inside. i like that if he falls over he doesnt hit his head on those crib bars.
honestly, i don't think its a huge concern. i personally think they look really cute in a crib. if you like them, use them. but if they make you too nervous, just hang them up like a decoration until baby has better control.
*CPST* mama to my three year old DS1 1.31.09 and wedded to angel 8.07
DS 2 8/18/12!!
She's 4 mo old and doesn't sleep in her crib but she has had some naps there and I found her once all tangled up in the bumper. That was it for me. I took it off. Maybe once she is a bit older I will put them back on. I do worry about her bumping her head - she tends to migrate to the corner
Beth . wife to DH and Mama to DD1 (May 1-09) and DD2 (Nov 2-11)
Dangers: Entanglement and strangulation, suffocation, all of which can lead to death
Benifits: Cute, if baby "bumps" head on the rail (which is really not going to be hard enough to cause injury in most instances) there is something cussiony there.
There are babies who can scooch toward the bumper and not able to roll over yet or pull things from face. I'm just not willing to put my baby's life at risk over something cute and soft.
-T, Wife and Best Friend to R 3/2005; Mommie to E 8/2007; and G 3/2009