I try to be friendly and helpful with everyone - but some of the situations I've been in online over the last 15 years have made me very wary and cautious - and there's nothing wrong with that! :)
Whatever your reasons are for not wanting to disclose your location, they're good ones.
If you don't even want to mention your real name, that's fine too. Everyone has to find the level of caution that suits their own situation and you're not doing anything wrong if you choose to be a bit more reticent about your personal details than others. :)