There are 100s of reasons why you should pursue humanities. Let me name a few for you:

• You learn to be creative and write: Unlike many other courses like Engineering. etc, where the process of learning is very mechanical, writing doesn't work that way, to be able to write perfectly you require to read how other people write, practice your own writing, then after a long time, you perfect your skill.
• Things are not as bad as you think: Most people are of the thought that humanities grads are the ones who top the unemployment chart, but this is a blunder you should never believe. There are plenty of opportunities. A recent survey was done by Georgetown, the average unemployment rate of humanities grad is 9%, it is at par with computer science and maths grad i.e. 9.01%. So, you get the picture.
• Works out in the long run: In a person's lifetime, they never stick to their first few jobs. That's why having a skill like writing could go a long way with you.
• Scope: There are plenty of fields that a humanities grad could pursue. I will name a few; on top of my list, you could always become a novelist, a journalist, a lawyer, an economist, a professor, a paid blogger, a freelance writer, a copywriter, you could work in a publishing house.etc. I could go on and on and on, there is an endless possibility, I just mentioned a few conventional ones.