Is it necessary to have bitlocker enabled on my laptop?

[Windows 10]

When I first bought this laptop I had it for one day before it updated and restarted in "bitlocker" and had me put in a recovery key. I previously had Macbooks so I am still new to Windows computers. It is a bit of a hassle dealing with the bitlocker stuff so I was just wondering if it is necessary to have on or if I can turn it off.

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