I don't tie financial reward to the payment of tithing, like paying tithing is some kind of financial insurance policy. I would be a hypocrite if I did. I've lived the extremes - paying tithing and losing a house, paying tithing and getting help from the Church to stay in a house, and paying tithing and keeping a nice house.
I don't doubt some people's experiences with really cool things that helped them pay their bills, but I don't believe it is the default for all tithe payers. The rain falls on the just AND the unjust, and financial hardship hits the tithe-payers AND the non-tithe-payers. Also, I do believe that those who contribute a significant part of their income to some cause tend to live more within their means - probably because they have to be more conscious of a budget.
I'm not saying there are no significant benefits to paying tithing. I believe there are great blessings, and I believe in the windows of heaven promise of Malachi. I just don't pay expecting to receive financial benefits; I pay to help fund the operation of the LDS Church and build the kingdom.
That's enough for me. Any other blessings are an unexpected gift.