Two thoughts. Premise, normal users aren’t switching to another client:

(1) I survived 6 months because the Nostr is a great place to get memes.  My wife requires 8 decent memes per day. Hashtag following ftw.

(2) Account discovery is a pain. But I think I survived in part bc I found ~5 accounts who are regularly adding value to my life.  nostr:npub1a2cww4kn9wqte4ry70vyfwqyqvpswksna27rtxd8vty6c74era8sdcw83a  longform content. nostr:npub16secklpnqey3el04fy2drfftsz5k26zlwdsnz84wtul2luwj8fdsugjdxk for booze ideas.  nostr:npub1lrnvvs6z78s9yjqxxr38uyqkmn34lsaxznnqgd877j4z2qej3j5s09qnw5 memes. nostr:npub10fd0ncqmzd6q3e7t9kzlh82asw2jj7kpn7hjvcrfhq4uyzc4dpvsxtvn3n for francophone/humor. nostr:npub17x7htjej3hgcqwqj86u9yvpcunhw6nz4zclzph2zfnlwe4v0yp8qrxvgap for I think witticism. 
(I will think of others when I post this.) —> In app follow lists or circles would be cool.

Zaps surprisingly figured more into 2-week stickiness than 6-month.