It’s well known Covid 19 transmission is very low if at all outdoors.

 Clubs have all the guidelines in place and they work. 

Playing sports is a great way to get/stay fit and is a great defense mechanism against viruses like Covid 19. If grassroots sports can continue good mental health will be achieved/maintained. 

Playing sports on the weekends give people routine and something to look forward to. Even in bad weather people like to play sports in their free time. 
I myself got back into football when it restarted in September and it has improved my mental helath massively. 

Don’t deny people the joy of playing sport.