Money is not the only thing in life. Never loose kith and kin for the sake of money and make your life valueless.
Life is comparable to a machine where parts are worn out. Parts beyond repairs are generally heated, melted and recast in to new parts. Similarly the physical body cast by God, goes back in to the soil to take a new form.
It is not advisable to run away from wife and children shelving one's responsibilities. If that is only the goal, it should happen with mutual consent, separating pleasantly.
Om Sri Sairam