“If my wife doesn’t mind, why should you?”
Yes, if she fully and willingly forgave her claim.
She needs to be fully aware that the normal Torah expectation and the general practice of Jewish men for 3000 years has been to support their wives, as is mentioned specifically in the Kesubah. This awareness of normal obligations and your special request for forgiveness has to come before the engagement. Otherwise, it is a forgiveness under pressure.
Then the future children, still need to be provided for. Hence, besides the forgiveness of her claim of support; she has to take on the obligation of supporting the children she will bear.
If he comes to the Chupah with a several year committed Kollel or graduate school stipend; with the understanding that after the several year period he will take a job as a Rebbe or professor; then he is supporting the family. She just has to accept the lower standard of living that a Rebbe or professor will provide vs. someone in a lucrative profession.