The reason to have one for me anyway, has always been the introduction of Golden Age Flash into the Silver Age. They could have written him in anyway they wanted to... he could have jumped out of soup can for all I cared. I'm just glad he got put back into the stories. I'm a collector of Golden Age Flash too so being able to read all those GA stories reprinted in the SA was great for me. I liked the way they wrote the 2 characters together when they teamed up. In the years before the internet, I don't think I even knew when he came in. I had many SA issues in my first Flash collection but not that one. I guess I just assumed Jay had always been part of the SA. I did not even come across a 123 until 90's. The minute I saw it of course I had to have it!
Of course there are lots of lame stories in comics, especially when you compare them to some of the great writing going on today. I take these old stories for what they were and are. John Broome will always be special for me because he wrote all those old Flash classics. Simple, short, with children in mind, still somehow he always tried to put a little something of his adult writing into them, science fiction/mystery, a little flavor which I really enjoyed. So hey, there's a Earth 2 which vibrates at a different frequency, sure let's go there and see what its all about, count me in!