Ana
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Schedule is just the tip of the iceberg as far a Independence.@MaxBottomtime, nailed it. What you get out of owning your own boat is getting to dive where you want, when you want. My old buddy had a boat and we'd split gas for up to four of us. He certainly wasn't even close to breaking even compared to jumping on a dive charter, but what we gained was our own schedule.
No more being cramped around strangers that may or may not respect your personal space and gear. Creative DMs that suddenly feel the need to make sure you are safe and screw your routine, and just way too many elbows around you.
The potential for having a less than great dive, grows exponentially with each additional person on a charter.
There's only one thing I kinda miss from charters, and is an after the fact kind of "missing". It is the amusing WTF things you hear and see on charters. But after diving off charters for about 20 years I should be ok on stories to tell. Every so often i invite the wrong person that serves as a reminder that I'm not good at the social game.