The situation of each applicant is different.
You and your husband already have a history of visiting multiple times in the past + you also have a good travel history. So, your application was likely to be approved as MEVs. That said, visa officers did not issue you long-validity MEVs in the past. You have had to apply/reapply for new visas each time.
For other applicants: If someone is visiting for an exhibition/conference/birthday celebration but asks for MEV, it would seem unusual because there's no need to visit in the future again for these purpose of visit
