acpi = off disables your Advanced Configuration and Power Interface
off temporarily while booting Ubuntu. If you have to add the
acpi = off to let ubuntu boot successfully, it means that the ACPI on your computer isn't compatible with this version of ubuntu.
I don't think using
acpi = off repeatedly wrecks your computer, because it only disables ACPI temporarily.
However, if you don't want to add the
acpi = off parameters every time you boot, you can disable the new card (BIOS) or disable ACPI (also from the BIOS). Use the second option if you can't find the New Card Interface.
But, if you have Windows, disabling ACPI from the BIOS may wreck Windows and the computer will force you to reinstall it. So do that if you have a hidden windows recovery partition in your computer.