That's my dilemma too - on the one hand, I want to delete my stuff (not that much of it is worth anything anyway), because fuck the way Reddit has acted and will monetise it.
On the other hand, if anything I ever posted was good/useful/helpful/amusing to other people, then I don't want to remove that just for the sake of spiting Spez.
Haven't been back to Reddit since the blackout, except once when I accidentally clicked a google search result to a post there (illustrating my point about potentially helping other people). Don't really miss it either. Lemmy is great, and I'm glad to see that so far it has lasted beyond the initial rush.