I have news for people who say those things. It is not news that they will ever believe, because they have already decided to live by their established prejudices, but here it is:
THE UKULELE IS JUST ANOTHER INSTRUMENT.
That's right. It doesn't have any special happy magical powers or anything like that. It's an instrument, just like a guitar or a saxophone or a bagpipe. Well, maybe not a bagpipe.
I once very pointedly told someone that if I couldn't play sad songs on a ukulele, I would never have wasted my time on it.
Okay, I love this instrument. It's something that I can get my head around and my fingers to more or less work with. I can strum chords as I sing. That's all I ever wanted. But no sad songs?