A mortgage paid in full by the wages of your tenant. Upkeep of the property from the wages of your tenant, no contribution from you. All that and 100 to spare for whatever you choose, paid for from the wages of your tenant. Sounds like a raw deal right enough.
National insurance and tax paid from the wages of your tenant. Emergency repairs paid for from the wages of your tenant. A life, a future, accumulating equity month by month from the wages of your tenant.