This is normal to be distrusting at my age?

I'll be turning 35 on April and don't trust easily like years ago. For instance if someone says I'll earn free vacation trips and win prizes, my immediately response is an ''Oh shut up. What's the catch? How much will all this cost me?'' or ''I ain't giving you my CC # bye''.

Someone that's being too kind, same thing. I'll think they want something in return. If someone ask for money because of a ''family crisis'', I'll immediately assume they're lying and refuse to lend my money.

This might sound mean but I've become distrusting at this moment. Is this normal at my age?
This is normal to be distrusting at my age?
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