thinking of getting a biological age test?

lately i’ve been getting more curious about aging and keep seeing people talk about biological age like it’s an important metric. is it really?

main thing i want is something actually useful cause this seems a bit gimmicky to me if i'm being honest. i’ve seen dna methylation tests, blood-based ones, even saliva kits, but i can't tell which one to get.

so yeah haven’t tried anything yet, still just comparing options.

basically wanna know what biological age tests are you all using and if they're even worth getting in the first place