I see a LOT of hope for your situation if you honestly, sincerely, diligently back off, get happy and move on. If your wife is going to come back to you it is only going to be when she sees that you are happy. You can't pretend to be happy - that won't work. You can't pull the wool over her eyes - she's been married to you - she knows you. When you are happy and have your life together, she will be interested in you again, provided she hasn't fallen in love with someone else by then.
Your wife left you because she was sad. She left because she ran out of steam, she ran out of passion - and she thought that if she left you she could find passion elsewhere. She also figured she had her own problems and you couldn't fix them for her - so maybe someone else could fix them - she's found out that's not the case and she's out there waiting. (She's on her own journey to figure out that SHE is the only one who can solve her problems, but that doesn't concern you right now)
The way you have responded has confirmed to her that she made the right decision. She told you the behaviour that was making reconciling difficult for her in the e-mail she sent you that said don't leave me divorce liturature.
The best thing you could do is to buy your motor cycle, get the cabin you've been thinking about and show her that you are happy, together and able to live without her. It's the only way you'll get her back.
These are hard words - but believe me, it's the only way.
V
Never make someone a priority, who makes you an option.