When I started this thread, I wasn't even aware that people did this as a way of remembering their loved ones, and I certainly didn't set out to upset anyone. I am genuinely sorry for the losses of those who have posted on here. However, I still think it is an issue that needs discussing.
I think I need to make it extra clear that it isn't so much the balloons being in the sky that I have the problem with (some replies seem to suggest that some posters interpret it that way) - it's where they end up.
As others have said,every single balloon has the potential to kill wildlife, and that applies as much to the strings or ribbons attached to them as the balloons themselves. I have come across (though very fortunately was able to free) a small bird that had become tangled in something like that, so have seen how easily it can happen. Animals choking on things like that is not a myth either -ask any farmer!
And that's before they decompose, and add to the pollution of the soil, our rivers and the sea.
I strongly disagree with the claim that there is any 'virtue signalling' going on here, too.
I was brought up, like most of us, I imagine, to not drop litter, and simply can't see how this is any different. Statement of fact, not virtue signalling.
Nor do I think there is any comparison between this and our using vehicles. Being able to get about is essential to our lives, in order to get to work and to buy food. Balloons are not!