It was personally strange to start programming in earnest with Python, and think namedtuples (or classes with __slots__) were so cool and efficient, and then learn C and just think "oh yeah. Structs."
What's really missing though is unions with destructuring `case`. Once you start coding in a language with proper unions, it's hard to go back. In python it might look something like this:
[1]: http://docs.python.org/2/library/collections.html#collection...
Keeps my code a bit more sensible than constantly indexing into tuples, imo.