Our old state started mail in during Covid, sent us an extra two applications for two of our kids who were registered in other states and hadn't lived there for 4+ years, would've been easy to fill out.
Our new state mailed our first ballots direct to our house (no extras). Given first time i looked it over but voted in person, no line. Wife mailed in. But what if spouse unexpected travel and said ok to fill out and mail in? What if 18 year old's first time would it be ok to help fill out mail in and give advice on who to vote for? What if you have 5 roommates who don't care about elections and are ok if you fill em all out and mail in?