I want to pursue commerce for my future,but my parents have a doubt that there is no job security in commerce whereas life of science student is very easy after graduation and also I had a doubt that which cources I should pursue other than ca, because ca is difficult?

If you have great interest in commerce field only then step into this field. I want to share my own personal experience with you. I am a commerce student and I am currently doing my graduation from one the top colleges of DU. I was an excellent science student till class 10 but wanted to explore the field to commerce hence I decided to take up commerce against the wishes of my parents. I regret my decision a bit because in commerce in order to succeed you need to be extremely competitive . The ROI is high only in some cases . You literally expose yourself to a number of competitive exams. In science you will become suppose, an engineer for sure . After becoming an engineer maybe you'll face problem in finding better package. But in commerce if you don't clear the exam you wont even get the degree . Suppose you are doing CA and clear your Intermediate exam and done with your 3 years of articleship and then you couldn't clear your finals . The only choice left with you now is to either clear your CA Finals by giving continuous attempts or take up a job with a meagre salary somewhere. In commerce field the duration of all the courses are very long around 5 years and even after that the package offered is very less as compared to engineers. Therefore , if you have a good interest in science I would suggest you to listen to your parents but suppose you literally can't handle science subjects then go for commerce.Do think twice before making any decision.