I had that attitude for a while. However I avoid seiled jacks, overly thin cables (that tend to rustle), or overly long cables. I have something crazy like a 10m cable that has crazy high frequency roll off. Great for recording warmer tones I suppose. With guitar it is a nightmare; I will happily record a simple A/B to prove it isn't just me.
The claim that Monster cables are designed to wear out jacks, or force you to stick with the brand as other cables will fall out of jacks, if true, is disgusting. I would avoid this brand for having such terrible ethics.
I think we agree, but my statement stands if we talk normal cable lengths. Length is not something money can fix, it's about physics - longer cable, higher impedance.
Besides - as discussed on these forums - boutique cables tend to have higher impedance, causing a roll off - that's where the myth of "more bass" originates..