Privium really is worth it. My partner and I both took the card as we will be travelling extensively this year and it is very convenient. Yes, the lines at immigration have been long lately, but you have to control everything now-a-days. With more and more people travelling each year the risk of fraud is immense.
And as others have said, have you ever been to the US? That's a horrific immigration "service"....and New Delhi airport at 1:00 am is no joke either.
Now we hear that more countries want to implement a service similar to Privium, which will be nice if the systems are indeed linked to one another. That is what they claim, so we shall see.....