Is it bad to still sleep with a teddy bear?

Nope. I'm an adult and I sleep with my Spyro plush next to my pillow.

Nah. Lots of people do because it makes them feel more safe and secure, or it's just comfortable to have something to hold onto so your arms don't have to rest to your sides or on top of each other. If it embarrasses you, you can buy a body pillow or something like that, but I see nothing wrong with it. I'm a man that sleeps with a giant cinnamon roll pillow and a rainbow alpaca named Snuggles. I see no shame in either of these things.

I am 39 and I am still guilty of this and it hasn't done anything bad to me

That's cute :D, Nothing wrong with sleeping with a teddy. i sleep with stuffies too and im 15. and I need a night light because i'm scared of the dark. Everyone likes to feel comfortable when they sleep. And something soft and cozy to cuddle with. its awesome and normal. Don't worry about it. Its actually the opposite of bad lol. I think its cute.

i'm 19 and i sleep with a stuffed bunny my grandma gave me from when i was 7 or 9. it's old,so i might have to get her parts sewn.

No, it's perfectly okay. Don't worry

-I'm 65 and have 2-3 stuffies in bed with me. I tell people they keep things from falling behind the bed (a partial truth).

no,im 74 yrs old,and sleep with a stuffed panda bear,it makes me feel secure.no harm done

Heck no its not bad! It gives you a sense of security and helps you sleep. Nothing wrong with that. It would be the same as having someone in the bed next to you basically. Most of the people who say they are "too cool," probably have a specific blanket or some sort of stuffed animal they use. Don't worry if its "bad or uncool," do what helps you sleep an don't worry about other peoples opinions! :)

Reminds me of a movie.