Neither do I but I don't consider myself a Thai permanent resident on a DTV (tourist visa) and neither does immigration. I will always put my home country as my 'residence' and my address in Thailand in the 'address in Thailand section' as the DTAC is about collecting information about you and technically everyone could write 'Thailand' as their residence even if coming for a few days in your reasoning.
When filling out your Thailand Digital Arrival Card (TDAC) to return to Thailand, you should list your home country as your country of residence. While you are residing in Thailand and have a long-term condo, your DTV visa does not confer official residency, and therefore, declaring Thailand as your residence could misrepresent your legal status.