Even if we have 194 counties in the world in some countries they don't have football at all or in some other countries football is not a priority and they pay more attention to other sports, I think increasing the number of teams can have bad effects because we can see more countries in the world cup we should not normally see them, more week team in world cup means lowering the quality.
We had this discussion infinite number of times in this thread. I would summarize my arguments in favor of increasing the number of participants:
1. Current setup favors UEFA teams. 40% of the representation is given to UEFA, despite their quality being declining for some time.
2. Gap between stronger teams and weaker teams continue to narrow.
3. In general, football is becoming more popular around the world
4. Asia and Africa are severely under-represented
5. A number of top players continue to miss out world cup, because their country can't qualify (Goran Pandeev, Erling Haaland.etc).