Sati is not part of Hindu Religion. No Hindu religious text has prescribed this. In Mahabharat Kundi Devi was a widow. In Ramayana- the 3 wives of Emperor were widows. Moreover Sati was not practised through out the country.
Sati was a practice. Even RRM Roy has mentioned it so....., it would have started when a lady killed herself due to mental agony when her husband died. Over a period this has become a compulsory practise to such an extent that it has become part of the culture of the land and we have given Hindu identity to this.
It is something like tip(s) given for government servants has evolved into compulsory bribe.
Yet, I appreciate the moderate stand taken by you and suggesting a differnt path to approach and view religious practice.