I think the key to deciding on a spiritual path is to first acknowledge that there is NO PERFECT CHURCH! I know this may seem a bit simplistic, but the reality for ex-JW's is that we have always lived in a world of absolutes while in the WTS. This mindset makes it VERY difficult to even consider associating with another religion because it will automatically cause a mental conflict with the absolutes of belief that we lived under as JW's. As LWT mentions, most churches do not require absolute adherence to church dogma...there is no one policing of your thoughts or bringing you up before a judicial body for judgement. The key point taught in Christian churches, as an example, is the need for a personal relationship with Jesus and a fellowship with other believers. Beyond that, people take many other paths within the church. As Talesin points out, you may want to voluteer your time in some type of service to others...or you may want to work as lay teacher. Nothing is carved in stone.
If we are looking for perfection in this world, we will never find it, be it in the WTS, other churches or in non-religious pursuits. Life is limited by the imperfection of man...as long as we accept that, it makes other choices both easier to make and accept.