I always say that money isn't an issue in my marriage, but when i look back on things i see that the subject has come up often and not in a good way!
My husband is reckless with money, and loves to spend. He has even spent money in the past that was 'ours' without consulting me. At that point, i decided that i didn't trust him with money and now we pay for things more or less equally. That works well for stuff like the mortgage, food, bills etc, but less well when it comes to holidays and so on. If i want to go on holidays together, i either have to let him know about six months in advance (so he can save up) or pay for the whole thing myself. He has NO savings of his own.
I think that this is bad for our marriage overall; i resent feeling like i have to be the responsible one all the time. He never has to worry about a 'rainy day' because i've saved up quite a bit of money, and he knows that i will sort things out if anything disastrous happens. I feel that at the age of 38 he should be a bit more responsible when it comes to money, and am glad that we decided to be childfree. At least i don't have to worry about supporting kids as well. Come to think of it, i feel sometimes like i have one big kid already....