Having the baby sleep with you in the bed may very well mean that you don't sleep as well because you'll be paranoid that you'll roll over onto the baby. Or worse, you'll roll over onto the baby!
I sleep with my kids and enjoy the bonding benefit as well as others (like I know instantly when one is developing a fever). Regarding the arguments/justifications above, consider this:
Sleeping in a bed may very well mean that you don't sleep as well because you'll be paranoid that you'll roll off onto the floor. Or worse, you'll roll over onto the floor!
Unless you regularly fall out of bed, are so obese you can't track what all that skin is touching, or have some serious sleep disorder, you're not going to crush your kid.