The 1970s for me, so many games pumped out from the factories and so many to choose from to play on locations unlike today.

In the 70s it was common to go into a arcade and find a bank of 20+ pinball machines with several rifle games and unique 60s EM arcade games. Pinball machines were all over the place.
The 80s was the emergence of Video games and arcades maybe had 3-4 pins when they could make more money on Pac Man. I remember watching a operator opening the coin door on a Pac Man and was amazed as the quarters were overflowing out of the box.
90s-2000s great games but as arcades closed I would only see a few of these in bars 1 or 2 at a time, no where near the volume of games pumped out in the 70s. If you grew up in the 70s you know what I'm talking about.