I've owned far more cases than I care to admit to, and this is a danger with all of them. About a year ago, I picked up a cheap guitar that I felt OK putting a pickup in and using as a gig guitar. It came with a cheaply made foam case, but it had the greatest innovation in a case I think I've yet encountered.
This case has a velcro strap just above where the neck support is. Thus (so long as you remember to attach the strap), if you happen to pick up your case without doing the latches, the guitar remains safely within the case! This is such a fantastic little innovation that costs less than a dollar! WHY DON'T ALL CASES COME WITH THIS? I own a case that costs more than many people spend on guitars, and it doesn't have it! I'm planning on putting one in myself.