Her comments were slammed by GMB viewers, who said campaigners now want to "ban fun".
She told how balloons take up to seven years to break down - and even longer in the sea.
Ms Lights said the image of balloons needs to be changed, and they should be viewed as something wasteful rather than a bit of fun, in the same way that the public perception of plastic straws has been changed by campaigners.
She explained: "We need a cultural shift and a change in our lifestyles and the way we behave, in our consumption. This is one of the things that needs to happen.
"We live in an era of catastrophic climate change, our planet is cooking because of our wasteful lifestyles.
"These are not necessary items, we're very privileged to have had them for a long time. We needed to ban these things 10 years ago yesterday."
Good Morning Britain viewers said campaigners are trying to get everything banned, and dubbed them the "fun police".
One tweeted: "Imagine a world where children don't know what a balloon is or have never played with one. Such a depressing thought."
"Just ban everything including oxygen," another posted.
A third said: "Won't have anything left to ban in about 50 years."
Ms Lights was on the show with Countryfile presenter Tom Heap, 52, who doesn't support the proposed ban, arguing that the problem lies with improper disposal and not people having fun.
He explained: "They are immense fun, they are good exercise with kids; I'd rather my kids play with balloons all the time than computer games all the time. This is a disposal problem primarily, this is not a problem with the balloons."