In the end, if you can make enough money to live on, pay the bills and put aside a little bit every month, then having a job that you enjoy going to every day is far, far more important than the dollars. Only you can decide that.
If you do decide to go through the education, living inexpensively and counting your dimes as you go through school will help you in the long run as well. The less debt you accumulate in the first place, the easier it will be when you are finally paying it off.
Also, just because you go through for "verterinarian," doesn't mean that's the only option. And it doesn't mean you have to work at a verterinarian clinic. If you stay in that field, you could end up running your own clinic, or you could work in any field that needs animals -- entertainment, education, training, competition. There are probably lots of side vocations that the vet training would be required in, or a huge asset.