There is bugging out because a natural disaster is on its way, or a power/plumbing outage leaves you temporarily without essential services, and all you intend to do is travel to a safer place and spend a few days in a 3 star resort. That's fine. 'Bon voyage' and when you get there, 'bon appetit.'
But a SHTF scene is altogether different. Bugging out would only be indicated in the worst possible situation, in other words staying put means certain death. Get a gas-station or phone book map of your city or town. Locate your house as close as you can. Now, take a compass, and draw a circle with a radius of 5 miles around your home. If the situation is desperate at your house or in your neighborhood, it is sure to be just as desperate everywhere within that circle. If you think you're better off out there, trying to cross 5 miles of no-man's land and God knows how much farther after that, with only what you can tote on your sore and aching back, in the dead cold of winter or the scorching heat of summer, instead of holding out in your forted-up and fully outfitted Fortress Tract House Development, garrisoned by neighbors, friends and family and surrounded by every resource you have wisely acquired during your prepping, you're dreaming.
Every moving car will be attacked because everybody knows the only people driving out are preppers and their cars will be full of neat stuff. Everybody with a back pack might as well have a target on their chest, and you won't even hear it coming until after you've been hit. Do you think mobs of desperate people are made up of living-dead zombies? I can assure you there will be lots of combat vets who know their stuff just waiting for a loaded pack mule like you to come along. Bottom Line - if it's so bad you feel you have to bug out, that's the time to bug in, because you'll never make it out of that circle on the map alive.
Instead of wasting time and money on a B.O.B., spend that time recruiting and organizing the people you'll want with you when the crisis comes, and that money on the food and water and supplies you'll need to reinforce your house and sustain them for the expected duration of the crisis. If your group can hold out for a few months, even if it's TEOTWAWKI, the threat of hungry, angry, desperate and dangerous people will have taken care of itself, and you can take it from there.