Where do I start? How do I pack my bags and walk away from a 35 year marriage?

Good, bad, or indifferent, how does one do that? There's no physical abuse, no emotional abuse, no hatred, no fear for my safety. But there's no love either. He never puts his arms around me, hugs me, tells me he loves me. We don't sleep in the same room anymore. Even when we did, we never have sex. I'm disabled but not dead either. He's quick tempered, easy to provoke, lashes out verbally when he's frustrated. I've grown used to things as they are and most women would happily, even love to settle for a man like Michael. Tall and handsome, Hard working, honest, doesn't go out to bars with his buddies, does all the housework including laundry, lawn care, pool care, and loves his grandchildren dearly. Anything that goes wrong with the house, Michael knows how to repair. He spends his paycheck on our house and bills and in exchange for all this work and dedication, he does have his boat and enjoys fishing whenever he gets the chance.

I met a man online a few years ago who wants to spend his life with me, buy us a new condo, spend our lives just being together, holding hands, cuddling, no strings attached unless I want there to be. He says he loves me like he's never felt before. Everything this man says and does, I know he means. He's already put his money where his mouth is. I know exactly who and what this man is and know for a fact he trusts me and I trust him....with my life. He tells me everything any woman would love to hear a man say. He's an older gentleman but isn't afraid of death or anything my family, including Michael, could ever throw his way, including a physical attack. If I asked him to step aside, stay out of my life, he would. Because he says he loves me that much. I've felt this loved before. Many many years ago when Michael and I first met. I admit I would love to spend my life with someone who loves me with such a passion and conviction, I'd be crazy not to, right?

So, back to my original question. How do I pack my bags and walk away from a 35 year marriage? If you wouldn't, why not? All our kids are grown and on their own with their own families now. There's a million reasons to stay, but I can't think of any that includes a reason for myself. The reasons are always for other people. What would YOU do?

The world is full of guys who can "talk-the-talk." You have one that has "walked the walk" for 35 years so you want to dump what you know you can rely on for what might be. Before you do that, explain to Michael that you're going through a mid-life crisis and think the two of you need to see a marriage counselor before you destroy your family. Michael surely needs to be updated but he's not ready for replacement.

I agree with Rob. I was going to suggest counseling as well to see if the affection/communication issues can be resolved.

... I wasn't really sure how to answer this because I was wondering what Michael would ask/say if he were writing the question.

I'd exhaust all options before packing up.

If you want to connect with people having similar experiences, you could try:
http://www.experienceproject.com/stories/topics/marriage

If you need objective ears to listen, you can use:
http://www.crisischat.com

Ask yourself if you want to exist like this for the rest of your life, or would you rather make a change. Think about it hard and think about yourself only. It's your life, the only one you have. Once it's gone it is over, don't wait until you are too old to enjoy yourself anymore.
Once you have decided, do it and don't look back.

Please please dont let it go so easily just try make it work I am 22 and my parents split its the most horrible feeling ever.