Without a doubt, fix it. Handles are readily available, as is any other piece if it's not just the handle.
Aside from the caveats already mentioned, you also want that reserve of grey water to rinse what's in the stinky slinky after draining the black tank.
John & Donna
2018 Silverado LTZ, 3500HD, LB, CC, Duramax, SRW
2021 Jayco North Point 377 RLBH