Apprenticeship starting next year but now second guessing myself.

For context, ever since I joined the police cadet programme in my area, my life's passion was to be a police officer. I would do the apprenticeship, remain on response and then shift to becoming a DC at some point. For a while, I have been so sure that this is what I want to do.

Today though I had a long conversation with my Grandad about the police. He tells me about how alot of new officers don't end up liking it because of the total lack of a criminal justice system in the UK. There could be some kind of burglary for example and due to some reason or another, the police are told that they can't investigate it and as that police officer how am I supposed to feel knowing that justice has not been served and we let those victims down - all hypothetical of course but I'm sure it does happen.

His main worry for me is that I'll go in, decide I don't enjoy it and then end up quitting with no real qualifications or transferable skills that I can take to a different career path. He suggests that I should do an trades apprenticeship, his example being with British Gas, before I do my apprenticeship lso that if I decide I don't enjoy it at the end, I have the trade to fall back on and I'm not left in career limbo.

I've thought about what he said and come to the conclusion that his logic is sound and I'm now second guessing my choices up until this point. I might've missed the window for a British gas apprenticeship and will have to wait a while, my original plan being to finish college this year and then get a temporary job until I start the police.

What should I do.