You'd notice if it happened on/near your retina, it was very dark, and you were paying attention. Other than that I don't think you're going to notice.
LostXOR
Spaghettification is completely independent of relativistic effects; it just has to do with the gravitational gradient near a very massive body. An object near a massive body experiences more gravity on its "near end" than its "far end" which causes a stretching force. This does mean that spaghettification would be noticeable, and likely very uncomfortable as you're ripped apart by extreme forces.
tips fedora
You look like you're thermal throttling, let me squirt some of my thermal paste inside you to help cool you down.
Technically we can, it's just so expensive as to be completely out of the question.
Time to start eating bacteria now, I guess.
We grow flawless crystals, slice them into perfect disks, engrave billions of arcane runes onto them with magical potions and rays of light, animate them with lightning, and make them do our bidding.
And then we give them an "intelligence" that can't even count the Rs in strawberry...
That's basically what parabolic flights for simulating low or no gravity are.
A white cis male completely lacking empathy, to be more specific.
In Minecraft where you can take a few arrows to the face, no. In real life? Absolutely.
But what if it has a bow and arrows? Minecraft skeletons are terrifying.
Inhales pure ozone.