It's not cheating, primer is just a really good product. It can feel like a good primer can almost accomplish miracles, but it is just a matter of having the right starting point, which you get by using primer.
A primer helps give you a uniform look where there are no visible leeks or redness. Your makeup will put significantly nicer and even last longer. We know good that it almost sounds too good to be true, but we can only recommend it try and of course be tried in an allergy-friendly version, as it is important not to develop allergies from the use of makeup.