There is no depth to these games, they are bog standard run and gun shooters. HL1 only gets remembered and is did a real life setting well instead of being on mars or stroggos or something daft.
I actually can't remember the last time I saw you post without flaming a Valve game. Go on, try it.. say something totally irrelevant, about cars or something...
It'll just be "Valve's car models are crap".