You know the old saying: "You can't be too rich, too thin or have enough trains". Or something like that.
But - I am not thin, not rich and I definitely had enough trains about 20 years ago. 'Course, I kept getting them (they kept offering new types) and now I actually get bothered by how many I have. I don't buy any more.
So, yeah - if you think you have enough, you do. If I had only listened to that little voice....