I’ve done many solo cruises, and I’ve gotten quite spoiled having a room all to myself! I also love setting my own schedule, and never having to consult with someone else about what we’re going to do today! I’ve done back to backs for 14 total nights, and wouldn’t have minded staying longer.
When the ships first started up after Covid, I had to eat at a table for 1 in the main dining room, and the buffet wasn’t open for dinner. I thought I’d hate that. But I even love that now, and usually choose to have my own table. If you want to meet others at dinner, I’d suggest signing up for late dining, as you’re more likely to be assigned a table with others closer to your age.
But trust your gut. You know yourself best!