Would I be mad to join the Guards?

21, M. I graduated college this year with a level 8 in Engineering from DCU. Currently working in an entry level position in an office, 9-5. I'm finding the transition into 9-5 very difficult. I've lost a big goal and driver in my life (always working towards grad) and am now feeling like a cog in the machine with no sense of purpose. My job is objectively quite good for a graduate role, but I can't help thinking how I'm not really doing anything useful and the work itself is quite mundane.

I find myself daydreaming throughout the day about a more exciting career. Mostly Defence Forces or Guards. The idea of being called out somewhere, working with the community, or even just directly helping others is very appealing to me. I imagine there's a great sense of purpose there. Something that I'm really lacking right now.

I know there's plenty of other roles in my industry that aren't office work, but I'm quite disenfranchised with engineering as a whole right now. I'd really like to help people and have a "cooler" job with a sense of purpose. I also know there's paperwork involved in the guards, but it's better than 100% paperwork.

TLDR: Newly qualified engineer. Hate my office job. Looking for a uniform and sense of purpose.