I generally find the older generation seem to love these (not everyone of course )
I have a few thousands worth, purely because it stops my wife playing the National Lottery (as it appeases her desire to be in with a chance of winning something).
I believe the statistics show that the interest generated from premium bonds is lower than a mid/high paying interest account.
But… There’s no chance of losing anything (if you ignore inflation), and there is always that chance you may win…
I won’t be putting much more in, as I’d rather see some actual interest gained.