I've heard that they may play a role during childhood in catching and cataloging antigens -- kinda building a database for the immune system, but once into adulthood they are no longer useful and, in fact, continue catching stuff making you sick more. But who knows?
My wife used to get about 7-10 colds every winter. It was ---smurfing--- ridiculous. She would get better from one and start coming down with another one within a couple days. She got hers out a couple years ago and it's been like night and day. Now she rarely gets colds. For a long time she thought she just had a ---smurfy--- immune system. But her tonsils were so incredibly big that when she got sick they made it difficult to breath. So she had them out and since then almost no sick.
I'm pretty ---fouled up beyond all recognition--- up. I go through periods of being pretty much fine to being pretty damned uncomfortable. Yesterday and the day of the surgery I wasn't too bad. Today is much worse. Day four or five should be the worst of all, so I'm not looking forward to the next few days. All things considered, I think I'm doing well. I'm eating a lot and drinking a lot. I think my wife had a much harder time of it. I'm learning which of Gerber's products are bearable and which aren't half bad

The biggest problem is that my head is a phlegm factory but I can't do anything about it in terms of clearing my sinuses or throat cos it's too painful, so it makes it difficult to breath, which makes it difficult to sleep.
Sorry for that last bit. Kind of nasty.
...and so on.