Except python.org is so much better than python-lang.com that isn't even funny.

Case in point ... I searched for "ruby language" dozens of times before learning "ruby-lang.org". And the ".org" suffix was the easy part because my brain associates those domains with non-profit stuff.

I also find TLDs to be useful for figuring out the target of a website. E.g. ".co.uk" / ".de" / ".eu" are usually companies with headquarters in the European Union.