We currently have 4 day one day tickets, due to a last minute trip. We will be down for a few days in November to get some stuff done for our daughters wedding. And thinking we may want to go to the parks, since we are staying at the swan. And we are thinking of staying a day or two after her wedding, just thinking about if we will want to do Disney again. A lot to think of and big decision
I say every year "we are not renewing next year" especially when there is another price increase! and yet every year for the past 4, when the renewal discount is offered I do it

IMO it pays to have an AP, if you can afford one, if you visit 2x or more in a year.
The perks are worth it, even if only 1 person has one for parking, merch and TS discounts as well as Resort rates if you plan to stay on property.
There's also additional offering to AP such as The Tables in Wonderland if you dine out and enjoy adult drinks a lot.
We also like the freedom to come and go often during our stays. We don't feel we are wasting a ticket day if we want to go half day or sleep in some days.
If you decide to upgrade to annual passes you can apply those tickets to the upgrade price. Just make sure you do so before the last day your ticket is used. In other words before you leave the park on the last day at Guest services. Your annual pass will have an experation date that coincides with the first day of use on your tickets. When you first entered the park.
I purchase tickets through
undercover tourist since they are always a savings when compared with Disney total after tax gate prices and online prices. Then we upgrade. (I also purchase WDW gift cards at a 5% discount at warehouse clubs and Target with my target red card to use for payment balance). Disney used to bridge the tickets at gate prices which offered better savings, but I think they now give you credit for discounted price you paid for toward the AP cost. Still a savings though
Bottom line, If you know for sure you are coming back and will use it, it's worth it. Gate prices will probably rise before your next visit. But if you not sure or anyone in your party may not be able to return, then that would be money wasted at any savings.