I only played the entire (?) HL saga a few years ago.
Before that, I had to share the computer with my siblings, when most of the time we could only use it for a predetermined amount of time (nonsense rules). I think that's why I liked to spend so much time in the LAN houses... That shared computer was very, very slow, and didn't help me to get interested in mapping previously because it was a disaster when I wanted to load any game or something alike. Add to that a big spoon of dirty dust extracted from the old sister who thinks she could name what could and couldn't be installed on the machine, and the most useless computer gets born.
Anyway, playing Half Life for the first time over a decade later of its release, the game could still deliver an amazing and unforgettable experience for me. It was also interesting to notice things there that modern shooters apply to their designs nowadays.