Comment by sandos

In my humble opinion as an amateur genealogist, after a year or so with paid services (Ancestry, Myheritage) I find there is really no good reason not to use a combination of Wikitree and Familysearch, both free, if we ignore DNA tests.

Especially familysearch allows private profiles, no need to share. Wikitree has a policy of "do not add living people", but it is possible to do and Ive done it for close family.

Yes, this means sharing fairly freely, but I do not see a reason not to. Unless you want a fantasy tree, sharing your tree will make it higher quality. We all make mistakes here and there.

Wikitree especially requires you add sources to your work, which might feel odd for a personal tree of course.