One of the great things about ScubaBoard is how it helps people tease out just such things. I would add that leaving your rental truck doors unlocked, windows down and nothing of value (except tanks) in the truck largely bypasses the petty theft from rental trucks during diving. Sure, nobody wishes it were necessary, but it's fairly easy to practice.
Bonaire is definitely more work - setting up your rig, swapping tanks, loading and unloading the pickup bed, heading out to eat or buy groceries (unless you're at one of the few A.I.s - the Plaza or an option at Divi Flamingo), etc...
But you can dive any time of day or night, most any dive site, and most likely nobody is going to stand there and tell you that you can't dive solo, or otherwise criticize what you do.
I appreciate Bonaire for what it offers (independence and freedom!) and liveaboards for what they offer (ease of everything - set gear up once, break it down once, no driving, good food multiple times per day right there, capable guides, etc...