Confused what I should do

So I applied for the platinum card just off of a Google search looking for the best everyday credit card. Stupid me I did no research before applying. I got approved for the 150k points and 200 dollar deal. After getting approved and accepting it, I started looking at the rewards and noticed it's for people who fly a lot. I haven't been to an airport in 20 years, and the gold card would be way better for me. Should I just suck it up and get the 150k points using the platinum card, or cancel it before I have the pay the annual fee?