I was on citalopram for 2.5 years. I felt like I "should" come off them so I tapered off them over 2 months with the agreement of my GP. I fully came off them in July this year.
By October I was in a terrible place. I was an emotional wreck. It culminated in me no longer driving due to anxiety and I had many episodes of uncontrollable sobbing. It creeped up on me and dripped like a tap. With hindsight I can see that I had gone downhill but I didn't realise until one night I went on a very rare night out with friends and ended up sobbing in the pub.
My night out was the Saturday and I was back at the doctors sobbing on the Monday. I stayed in bed solidly for 1 week and was off work for 6 weeks, I barely left the house in that time.
Currently I feel great. I like myself again, I'm driving, taking my kids to school again
going out shopping, I have been back at work for a few weeks. I am me again. Thank god for my wonderful and supportive husband who did everything whilst dealing with his own mental health issues.
I have been on and off ADs since I was 16 (now 37). This past episode has made me realise, quite clearly, that I need them to function and be me. I am more than happy to stay on them forever now.
I thought I was ready to come off them because I felt good and felt like I didn't need them anymore. But I felt good because of them. I have complete clarity on that now and feel 100% at peace with that.
My advice is be careful and try to take notice of little changes in your behaviour and emotions. I guess there really is only one way to find out whether you need them or not. There is no shame in taking ADs, it took me to having what felt like a breakdown in October to realise this.
Good luck 