I think you first should be safe and use bitcoin in safe environment and not on an infected PC or in any not known web wallet.
If you stay safe then your bitcoin should be safe as well and about the law, I have no info.
well i agree, this should be the first concern regarding using bitcoin. but bitcoin as it is , network, securities, i feel safe using it. even the stability of bitcoin today, there are lots of people who are using it legally, lots of legal merchants are now into bitcoin. any unsecure things come from the external factor and not in bitcoin structure.
The only thing that we can not do is to control the price so it depends on and the only non-safe thing is this.
Bitcoin price is unstable so the only unsuitability is this and we are aware of it.