What separates it from the other deed forms is the promise, not the transfer. A deed carrying covenants of title backs the conveyance with the grantor's own guarantee, so a buyer who later discovers a defect has someone to sue. A quitclaim carries no covenants, so the same buyer has the property and nothing else. Florida's two statutory forms sit a few sections apart and make the contrast plain: a conveyance in the warranty form is "held to be a warranty deed with full common-law covenants" under section 689.03, while the quitclaim form carries none at all. Both instruments are capable of moving full ownership, and a grantee who accepts a quitclaim has accepted the title risk in exchange for whatever made the transfer attractive.
The uses that make sense are the ones where the parties already know the history. A spouse releasing whatever interest they hold under a divorce settlement, a co-owner being added or removed, a homeowner moving a house into their own revocable trust, a correction after a name change or a misspelling, or a neighbor releasing a disputed strip after a boundary is resolved. In each case there is no stranger relying on a promise, because the grantee already knows what the grantor has. That is also why a purchase from a stranger is almost never done this way, and why a lender financing a purchase will not accept it.
The statute books contain a quiet verdict on the form. Florida's legislature created a curative procedure for a single scrivener's error in a deed's legal description, so that a mistyped lot number does not require a lawsuit. It defines the deeds eligible for that cure at section 689.041(1)(a) as "any deed, other than a quitclaim deed, which contains a scrivener's error". The reasoning is not hard to reconstruct: a curative statute works by assuming the parties intended to convey the property described, and a quitclaim deed carries no representation about what was intended to be conveyed in the first place. A quitclaim with a bad description does not get the statutory fix.
A quitclaim moves ownership and does not move debt. If the property carries a mortgage, the person who signed the note stays liable on it after they sign the property away, because only the lender can release a borrower. This is the single most expensive misunderstanding in the area, and it comes up most often in divorce, where one spouse signs a quitclaim expecting it to end their exposure to a loan it does not touch.