I have used CSS for print layouts before. My stance on this is: If you can reasonably expect someone will print your website or (more likely) parts of it, because of its nature, add a nice add free, no tracking cookie print layout. If not, don't.

I often have to print for example online shopping baskets so others can decide which offer they will take. Meaning how your shopping basket looks print absolutely will have an impact by annoying or pleasing the people who make the decisions. Needless to say, 99% of all shopping baskets look like trash when printed out.

If you have a blog, it would be reasonably that someone might want to read your article offline or store it for archival purposes. Having that look decent is not a bad thing. And it is not that hard.