Assalamu alaykum,
A 'kind of' relative who is a black cab driver told our elders the following things that taxi driver experience in their jobs:
1. Immoral women offering to commit haram acts with taxi drivers if they cannot afford the fare.
2. Drunkards vomiting in the taxi, not to mention abusing the drivers.
3. Shameless couples openly committing indecent acts.
4. People who living in high-rise flats claim to have to go up to their flat to get money for the fare only to never come back.
It may be good money but what use is that money if we are exposed to so much haram and fitnah in order to acquire it. It is better to earn less and keep our mind and senses pure from contamination. The real value is not in the money but in the amount of barakah it contains. InshaAllah, if both of you beg Allah to help you and be patient and grateful for what you have, help will come from Allah Himself. And nothing is better than what comes from Allah. May Allah grant your family halal rizak. Ameen.