Hi OP! I have a donor-conceived 1yo.
For me, I approached those kinds of questions by trying to make the most ethical decisions I could at every stage. I felt strongly that I would want to be open with any child I had about their origins, as I do believe this is the best approach, and with that in mind I wanted to be able to have positive answers to questions that might come up. So for me, having treatment in the UK (where donor information is provided at age 18) was important. Many of the other countries that offer great treatment options do so while mandating anonymity, and I felt uncomfortable with that - particularly when considering the kinds of questions that I could envisage an older teen or young adult having about their donor(s) and their motivations for donating. I regard my son's origin story - where all the people involved in bringing him into the world really wanted him to be here, and went out of their way to make that happen - as a really positive one. (Many people can't say as much about their own conception, sadly.)
As with previous posters, I definitely don't want to discount the lived experience of donor-conceived people who have issues with their origins. But I agree that these stories seem often to come from people who have been misled or lied to about those origins for much of their lives - and I can hardly blame anyone for being unhappy about that. I would hope to be able to give my own child a different experience. I'm also conscious that there are people in the world who are unhappy about their parents' choice to have them, for whatever reason (they did it to 'save' a relationship, or they were addicts, or abusive, or any number of other reasons why their child's life played out in difficult ways) but who don't have that specific focus of donor conception to hold responsible, and so don't have quite the same platform. And those people have just as legitimate a set of concerns, but it's not so typical for parents seeking to conceive in more traditional ways to spend as much time thinking about the ethics of doing so. There are some exceptions, of course - environmental concerns, for example, or concerns over paying on hereditary medical conditions - but it's less usual for people who aren't relying on donor conception to agonise over whether having a child would be ethically appropriate. I actually think that thoughtfulness is a real strength for parents of donor conceived children, and a good foundation for the future.
Best of luck, whatever you choose going forwards.