Is SM1 Worth Playing?

I’m a long time Warhammer fan and I had my eye on Space Marine for a while but never found the time. I had been intending to wait for a sale and pick up both games so I could play them in order, but a friend recently bought SM2 for me as a birthday present.

I’ve almost finished the tutorial for SM2, but I’ve held off at end since my friend said the last cutscene contains major spoilers for the end of SM1. I’m itching to play more though since I really enjoyed it.

So here’s my question for the other long time fans who’ve played both campaigns. Is it worth picking up SM1 at full price to play through them both in order? The near $50 price tag has me questioning whether I should.