Is a pack n play necessary?

Paige

I am trying really hard to avoid buying extra gear that will not get used and will just take up space. I’m having a hard time understanding why a pack n play is necessary. This is my first so I very well could be very wrong. The plan is the baby will sleep in a bassinet and then move to their crib. I know people have them downstairs and lay the baby in there while they’re downstairs but can’t I do the same thing with the swing and the bouncy seat? And the bassinet since it’s portable.