Welcome to FT!

You are posting in the incorrect forum, as your question has nothing to do with mileage runs.

The information posted by jessej is correct. It's not ridiculous for airlines to not accept miles earned on another airline! It would be like trying to use a GAP giftcard at Starbucks. They have nothing to do with each other.

I agree that by using points.com you will waste many miles and it's not worth it. What should you do? Take jessej's suggestions and start building up miles in your accounts in other ways than actually flying. If you can't do that, donate them to charity, buy magazine subscriptions, etc.; each airline's webpage will have information how you can do this.