I'll let you answer that question:
> just to enhance taste?
Yes, that's exactly why.
> Sodium is naturally present in all plants and meat no need for extra intake
If that were true humans (and large numbers of other animals) probably wouldn't have developed a strong taste for salt.
It's true that it's quite easy in the modern world (especially with processed and restaurant food) to overdo it, and restraint is called for.
> that huge quantity of sodium that is taken from the salt that is added in every non sweet food messes up your body at cellular level
Adding salt doesn't mean adding a huge quantity in every non-sweet food. (Processed foods do tend to that, but that's not a “why add salt” but a “why eat processed foods” issue.)
It doesn't appear there by magic. Many wild animals love their salt licks, and for some licking rocks is their primary source.
But anyway, by your argument virtually all spices are pointless. I can't really get behind that.
This is just plain misinformation.
People who sweat a lot due to physical labour, exercise, or hot weather, require extra salt --- particularly if they eat a "clean" diet free of processed foods as you seem to advocate. Inadequate salt intake results in problems like fatigue/lethargy and muscle cramps.
Animals also lick salt; supplementation with salt not some human-invented vice.
https://en.wikipedia.org/wiki/Mineral_lick
Salt is so important that it was used as currency once; that's why what you earn is still called a "salary".
Didn't you just answer your own question?
Yeah sure.