Exactly, I made a post about this (deleted now, I don't keep my posts up anywhere), something like 60 - 70 pull on BF and got 0 5*, then there are people on here whingeing that they didn't get the 5* they wanted, "only got 1 in 10 pull", and "not bad", even one who got one in a 10 pull and said he was contemplating not playing the game any more LOL

There are only 2 reasons you can perhaps be let off, it's a dupe or you just keep getting 5*s of one particular colour, like me for e.g. apparently purple is my favourite colour as that's all I've gotten for a while now, I have a backlog of at least 6 really good 5* purples but It'll take around probably 2 years to get the mats to level them all so no, I'm not going to be over the moon when I pull another purple, however, if you pull someone you don't have, be grateful no matter what as the likely case is you got it with good odds, unlike me and a lot of others.