Is a crib necessary ??🤔

Hello! New mom here. Currently setting up my babygirl’s nursery before her arrival. & I’m debating if I should buy a crib. I plan on having her sleep right next to me in her basinet. & I just feel like the crib will just be there for decor instead of having some actual use. But then again I’ve never had a baby so I have no clue if a crib is useful or not lol.

So my question is,

How many of you actually put their baby in a crib? And/Or how many months was your baby when you began to put them in their crib ?

How fast do babies grow out of their basinet ?

Do you prefer them sleeping with you or in a separate room ?