I think your essay provide enough evidence for your position (agree).
Here are my suggestions:
just based on what I know, it is not absolute :)
For most folks on Earth,
most can change into the majority of (higher vocabulary)
folks is quite informal, you can just say people.
This trend is so deeply engraved in people's mind that the organisation of such events continue to be planned, even when some participants are facing grievous social problems.
When I see this, I'd like to read some examples.
pierre11: It is agreed that
large scale sports games make people focus on attractive contests instead of international disputes, and help them being proud of their nation.
I think it is agreed doesn't nessasarily mean you agree...
Perhaps you would like to be more specific about whether or not you agree.