Counting the days we are clean can be wonderful for some, but I hope you realize that it can also be - deep within our hearts - a counting of how long we can actually tolerate the (inevitable) buildup until the next time we act out. I believe this is very frequent. It is exactly like climbing up a ladder. I am afraid of heights. If I look back down as I am climbing, once I get to an impossibly high height, my hands and feet begin to shake. I know that I would fall.... so I never climb that high! How high do you want to climb in sobriety? If you are looking back, you will not get very high. We all know that being sober 5 years in a row is just plain impossible... for each of us, the last barrier is the "impossible height". Sure it's BS, but our feelings do not care about sechel very much. It's our Reality, so why pit ourselves against so powerful an adversary?
Instead, my experience in sobriety is like that of a guy walking across an abyss on a 2x8. Now, I have no trouble at all balancing on a 2x8 if I see it's on the floor! But if I see that it is suspended between two high buildings I will certainly panic, lose my balance, fall, and die. Looking down is just plain ossur. So I don't. And I do not count.
For about three years, I didn't mention my starting date in the groups. I'd just introduce myself and say , "...and I am grateful for today's sobriety"... till my sponsor suggested I start saying my starting date (Feb 28th, 1997) in order to encourage newbies that it really is possible.