Do I really need a 5.x:1 reel for crankbaits?

not at all, but if you are a big time crank thrower then id suggest it cause over time youll be glad, but for a once in a while crank thrower any reel will do fine....what reel are you using now?

No, You dont need a 5:1 but I find that it helps with slowing me down. I have a 5:1 on my deep diving crankbait setup.

Nope you don't.

I don't crank that much anymore, but when I am using deep divers like DD22 etc. 3.8:1, and for mid cranks 10' or less like traps, small fat bodies, etc. 5.1:1....

As stated helps slow me down, I hate trying to slow down a 6.2:1 or higher mostly use those on C-rigs, Jigs, and, T-rigs...

Tight Lines!!!!

Nope, you don 't "need" it but ....... why having to worry to slow down your cadence when a slower reel can do it for you ? all you have to do is crank in the way you always do and let the reel do the rest.