May I suggest moving Delete away from Edit on the respective Post Edit and Page Edit screens where all the past entries are shown.
Many's the time, when either in a hurry or more likely very tired, that I have unfortunately made the wrong choice.
Should you think I am the only soul alive who has suffered this mistake, I beg to differ. If a few thousand users; especially new users, are polled on the question, I am sure you will find I am not in the minority.
Thank you for your consideration. WordPress is the best blog platform there is.
Cheers to all,