Do you have to collect them all?

I recently seen a few posts online about if you have to collect every single game and versions to be seen as a serious collector, or if just going for the ones you enjoy is fine?

The way I look at it is simple, There are multiple tiers of collectors such as

All Games released
All Genre Games released
All Sub-section (Big Box, special edition, etc)
All Games released by Company
All Games that you enjoyed on the system

just set the goal you want and then enjoy your collection goal when reached. Ignore the haters, praise the rest. Not every collector is an asshole, or out to rip everyone off. Collectors do usually scoop up all the deals you find online and locally, but many of them also only grab the games they need and leave the rest for someone else to find.