I'm probably being unreasonable but I wondered what the consensus would be. I've got a new bike. I bought it last week and it's beautiful. It's a different style to my old road bike. I've taken it out for a few rides (probably done 30 miles or so) and I don't like it. It's too heavy and slow.
Is there any point in asking to return it? It's not brand new anymore 
I could sell it privately but would make a big loss if I did that.
I could just keep it.
Oh damn.