I don't think that makes you a coward. It's such a complex feeling trying to work out whether to go for diagnosis.
When I was part way through the process I made the mistake of posting on here, and some people made some incredibly unhelpful comments. Having spent the last 2.5 months unsure of why I felt/feel so conflicted, I've concluded the following:
1) if you spend you're whole life being misunderstood (including by your own self), it's natural to want clarity and understanding.
2) if you've been incorrectly labeled in the past, including by being not adequately listened to by health professionals, it's natural to feel apprehensive about either receiving a diagnosis if it's incorrect, or being prematurely shut down. Both are valid fears when they've been your experience.
3) if you can find a psych professional who does take the time to accurately represent you, whatever the answer, you'll be closer to clarity.
Ultimately #3 helped me get through. I felt like my psychologist really listened (including taking in information from my mum and my husband), and by the end I felt that even a "no, that's not it" would have taken me closer to the truth. Since receiving my diagnosis, I wish I'd been better prepared for the horrible roller coaster ride. In the past two months I've had two periods (about a week each) of being suicidal and have felt so much mental agony that I didn't expect, but it's definitely getting better in terms of acceptance and feeling like I'm going to be able to learn to live with this. It's a really hard thing, but it's worth knowing, I think.
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Diagnosed ASD
AQ: 42 (Scores in the 33-50 range indicate significant Austistic traits)
RAADS-R: 165
RDOS: Your neurodiverse (Aspie) score: 159 of 200
Your neurotypical (non-autistic) score: 44 of 200
You are very likely neurodiverse (Aspie)