Good to have, won't lost out if don't.

If you want to bank on CCA, make sure you try your best to executive roles. But never choose CCA over schoolwork. Must juggle time really well. If it doesn't work, quit the CCA.

We are just talking about practicality. But if you are talking about leading good and exciting life it's another issue all together. I believe one should join CCA for experience and friends, but the pragmatist nature in me often tells me that it's either executive position or naught.