@Hisnamesblaine
Leave the poor devil alone. 
He is happy isn't he? Why do you want to spoil that? Money isn't everything, and neither is having a mortgage on a property til you're 65!
If it means so much to you, then why don't YOU better yourself and bring in more money?
I know a few people who are on minimum pay, with 12-15 year old cars, and a £350 a rent month housing association home. They are the happiest people I know. No financial commintments, no mortgage, no debts, and no panicking about losing their jobs.
One couple I know (both 50-ish,) work 21 and 26 hours a week in basic 'unskilled' jobs, for minimum pay (£8.35 an hour I think it is.........) Very low housing association rent, and very small outgoings. Very little stress, and a happy carefree life.......
Why try and force your husband into stress when he is happy as he is?