What Actually our Caste or Varna System was And what Evil It has Become Now ?

Earlier caste or Varna in Sanskrit were decided on the basis of a profession or karma (actions or duties) one followed. And no caste was superior or inferior from one another.
Some people just for their selfish motives and greed started this upper and lower caste/varna concept.

Since the children in earlier times learnt at home, this resulted in that the children had the same professions as their parents. Therefore, a trend of expectation started that the children of a person or family of particular cast/varna/profession/karma would have same caste/varna/profession/karma. Since under such education system almost all the relatives too had the same profession therefore communities having same professions evolved. 

This is what actually the concept of caste or Varna was.
But now a day since one is free to choose her or his profession due to the change in education system, therefore today a family in India can have members from different castes or varnas.

Hence to differentiate and treat one on the basis of the varna of their ancestors is ambiguous. What profession one follows, what kind lives she/he lives and morals she/he follows at present defines one's varna. Not just her/his profession.

And repeating again what I said earlier, no varna even today is superior or inferior from one another. All are equal before God. Our Gods have always defied the untouchability introduced by us humans in the varna system and that can be viewed here.

And since we humans created those stupid practices which hurt the sentiments and self respect of other fellow human beings, therefore we should only stop following them and shun those who still want to follow them. Just because our ancestors started them does not mean they should be carried on. Anyone can make a mistake. We are after all humans only and humans only commit mistakes, and what use are those traditions and practices which make us unhappy?

But I do not bolster that you start defying each and every tradition that has been prevalent from past till today. There are some traditions which do have sense and some scientific reasoning too (oh yes there are). Therefore we should shun only those traditions that hurt the self respect of others or physically hurt others.