Bad back and bad film

Since just before Christmas I have suffered a really bad back, the injury actually goes way back to my younger days and flares up from time to time.
Anyway just before Christmas I injured it again, and have suffered very badly since, it eased off a few weeks ago after leaving me more or less disabled, last week it got worse, leaving me so badly laid up I had to have the Doctor out to me (something I haven't had since being a child) Dosed up on 20 tablets a day and more or less unable to sleep I have been watching the dross that passes for TV overnight.
That brings me to the film... Yes... where do I start. Well last night at silly O clock a film called "Return to savage beach" was on, I missed the beginning but the basic plot (for want of a better word) consisted of several HUGE breasted girls in skimpy costumes running around with some muscle bound gym rejects, in a sort of soft porn James Bond style action adventure.
The film raised several questions for me.
1. Why would the girls leave the treasure to swim half naked off the enemy's island.
2. Why did every bullet fired hit a tree (except the one that hit a medallion)
3. Why do muscle bound jerks have to walk around in a shirt 3 sizes too small, I mean if you want to show off your pecks fine, just leave the shirt off.
4. Why do the baddies have to dress like ninjas with different coloured sashes?
5. Even drugged on painkillers why did I watch this appalling excuse for a film? God knows!