What are the reasons upvotes and downvotes are not comparable?

So if a post gets more upvotes than a community has subscribers will you disable upvotes too?

I switched to OpenOffice, and hated it. But it was free, so i used it. Then tried Libre, it was better… But it will was not Microsoft office. Then years later i had to use Microsoft office for work (it was Alli was allowed to install on the work computers) and realized how much i enjoyed using Libre over Microsoft.