Thinking on buying a HDMI for WII adaptor, should i mod the wii? Why yes/no

Hey so recently i was thinking on getting a HDMI for WII adaptor to play on the TV with my little sister and i wanted to know if u guys recommend me to mod the WII or not? we have plenty of games and here are (most likely stupid) questions but yea:

Why do u / do u not recommend modding the wii?
Will i still be able to play the games i got after modding it?
And what even are the benefits of modding a WII

sorry if its a stupid question