Investing in cables paid less dividend to me than investing in room treatment. I spend Rs.500/- in adding a sound absorbent panel to tackle only the first early reflection of my left speakers and it made me difference of night and day.
I have done similar experiments replacing my diy cables with expensive monster cables borrowed from friends but sadly it did not make any impact.
I am in 100% agreement with you.
A very controversial topic to touch, but I would like to put my thoughts here.
Based on my limited understanding, I am convinced that a well built cable is more than enough and that need not cost a lot. In the past, I was not toeing this line, but I learnt it now

hyeah:.
At the same time, we also see people (believers) claiming that they are able to hear sonic differences between different cables. Should we simply dismiss their claims ? Certainly, I will not question (and also have no right to do so) their honesty in making such claims. Of course, one can hear the differences in the sonic character if the hearing tests are
not done in a well controlled and level matched environment. They
may be actually correct in their claims, but it will always remain as
"may be" unless some objective measurements/tests done in a controlled environment claim that CABLES certainly make difference due to so and so scientific reasons. If not level matched carefully at the input stage , even a .2 or .3 dB differences in the loudness can be picked up as a difference in the sonic character and that is how our human brain works.
Again, I am not blaming the believers, but I will certainly blame the cable manufacturers in not being transparent. Ideally, they should subject their products to objective testing. Do we always need to be objective and not subjective ? Enjoying music should/will always remain subjective, but evaluating an equipment/cable, claiming to be of high fidelity, should remain highly objective. Objective evaluation is not an easy job for many of us and that is where the manufacturers should help. They should be honest enough to publish their test results got from the objective testing. Unfortunately, we all are left at the mercy of the manufacturers and succumb to their marketing claims.
This is my point - One should remain subjective in general and that is what makes one to have his/her own identity. At the same time, one should be highly objective as well before giving his/her's hard earned money to a commercial organization and buying into their marketing claims. They are taking our hard money for commercial reasons and that is very much reasonable, but should we not objectively see their marketing claims rather than blindly believing them ?
There may be a day in future where the commercial organizations (who claim to produce hi-fidelity cables) provide scientific data in support of their marketing claims. Until then, I will remain in the non-believers camp. Of course, we have democracy and choose to be in any of the camps (and we have polite disagreements

)