I am defeated by my 7 year old son

My 7 year old son, Meesam defeated me last week on a video game. Virtua Cop 2. I've never been able to cross all three levels at one go to face the final boss. I first played VC2 in 1999. I've put a few times more hours in this game than he did.  It took Meesam just a month to learn the game and cross all the levels.

Meesam and his sister playing with my Macbook

Is it a sign that he is smarter than I am? Or, am I too dumb not to reach at the end of the game? Or, am I too old (that shouldn't be -- I learned the game while I was 25, now I am 36). Or,  is it that children are just like that?

Should I be proud of Meesam? Or, be ashamed of myself? Or, stay indifferent? Any expert opinion?

I keep telling myself: "Welcome, this is only the beginning :)".