Nobody will have all the symptoms. I am scattered, lose things and get hyperfocused. But I don't struggle with the common signs of impulsivity - impulse spending, binge eating, gambling, risk taking - none of this describes me. I've never been much of a drinker or a drug user, although I did used to love smoking cigarettes, I also didn't find it difficult to quit when I was pregnant or TTC.
The only way impulsivity really affects me is how Russell Barkley describes it in that video I sent - I absolutely get distracted by irrelevant thoughts, ideas, and whatever is happening around me (which is, I think, part of what people mean when they say "it can't have been very important if you forgot it" - because people only usually get derailed by important things) AND I find it difficult to stick to things which don't have immediate feedback, and very difficult not to procrastinate and put things off until the last possible minute.
I am also not loud or thrill seeking, I am almost pathologically conflict-avoidant, I am very risk averse to the point I am overly anxious, I don't struggle with insomnia. So there are a lot of ADHD symptoms which don't describe me. But I struggle hugely with the difficulties self-motivating and organising and with routines, habits and goals. Time management, organisation, emotional dysregulation (I cry easily and can go into anxious/upset spirals), talking too much, difficulty prioritising, massive massive overthinking of everything.
But also, it might not be ADHD. The point of these "armchair diagnosis" threads is really to get some suggestions you haven't considered, isn't it, based on people having experienced similar? So ADHD is one possibility but there will be other things people suggest which might be worth looking into as well.
But I don't know that it's helpful to say I don't want to look into this because it's just an excuse for the way I am. When I went for assessment it was because I was desperate to have an explanation/understand the way that I am because I was so fed up of being that way and wanted to understand how to help myself be different. And it has helped because I do now have much better of an understanding of how my brain works and why I tend to do certain things which never made sense to me before, so I've been able to approach those situations in different ways which has helped. I don't go ah it doesn't matter it's because I've got ADHD. Sometimes I stop trying to do things which I think are unlikely to work at this point of my life, like forming habits, but I don't stop trying to achieve the goal I was trying to use the habit for in the first place - for example I now brush my teeth on about 99% of days, and twice a day about 90% of the time.
Incidentally because the waiting lists are so long and not everyone wants medication anyway there are some therapists now who offer a sort of "pre assessment assessment" aka a set of sessions aimed at exploring this question more of "why am I the way that I am and is there anything I can do about it?" which won't give you any kind of actual diagnosis but might give you more of a signpost as to whether it would be worth looking at. Unfortunately the person I was thinking of specifically doesn't seem to have any mention of this on their website any more, but I am sure they would not be the only person to offer this.