I really wish I'd bought bitcoins instead of mining equipment to mine bitcoins!
Never regret that! the experience you learned by mining your own bitcoins is invaluable.
I did the same thing last August, I could have bought BTC but I chose to use some of my capital to buy mining rigs because I wanted to learn and I do not regret it. I did buy coins also, but I could have bought way more coins than what I ended up mining. Regardless, no need to regret it.
You win!\