If cannot decide whether you should have your deceased relative cremated or buried, here are two reasons why a funeral home owner might recommend the former.
Your budget is quite small
If you've explained to the funeral home owner that your budget is small and have talked about the type of funeral service that you would want to have if you opted for a burial, they might advise you to book a cremation if they suspect your budget will not enable you to have that type of service.
Funeral home owners are extremely knowledgeable about the expenses associated with different types of funeral services and will know right away if the burial service you want would or would not align with your budget. If it won't, they might advise you to book a cremation, instead of having an 'economy' burial service that won't meet your expectations.
Cremations are cheaper, as there is no need for an expensive casket (as this will be cremated along with the remains) or to use a gravedigger's services or purchase items such as headstones and grave wreaths. As such, if you take this recommendation, you might be able to afford to use a higher-end urn and to make the funeral service a bit more special (by, for example, booking a string quartet), even if you have a small budget.
You want the funeral arrangements to be very straightforward
If you tell the funeral home owner that you would like the arrangements to be very straightforward, they may tell you to choose cremation. The reason for this is that if you book a burial, you'll be expected to make a lot more decisions and will need to liaise with more providers of funeral-related services. You'll have to work with a mason to design the headstone, will need to put more thought into selecting the casket and will have to purchase graveside wreaths.
You'll also have to arrange for the remains of the deceased to be transported from the funeral home or the church where the service takes place, to the cemetery (this would not be required if you had a cremation, as the funeral service is usually held at the crematorium where the cremation occurs). If you know that this is too much for you to take on and that attempting to do so would make this difficult time much harder, then a cremation might be the wiser option.