Corbyn has always been to the radical left of the party so I can't imagine why you supported him in the first place. And Anniebach, it is not just your party, however long you have been part of it.
Corbyn did not wish to associate himself with a party that has wrought terrible suffering on the least powerful and most cruelly austerity-hit sections of society. But he felt that, given the present political situation in this country, whilst he had grave reservations about the EU, the alternative was likely to be even more problematic. The Leave campaign had already talked about the jettisoning of "red tape", i.e. employment, environmental and consumer protections, and Corbyn mentioned this as one of the major considerations he had in making his decision to support Remain.
A significant number of Conservative and Labour voters were firmly in favour of leaving - but for different reasons. The Conservative contingent was generally fairly comfortably off and very much of the "Rule Britannia" frame of mind, citing the British empire and our unquestionable ability to outdo "Johnny Foreigner". Those voting Leave in Labour were generally at the opposite end of the economic spectrum - finding life very difficult because of unemployment, welfare cuts, poor housing, etc.,feeling neglected by all parties and believing that the the EU and immigration were to blame for their situation. Had Corbyn stood on a platform with the likes of Cameron, these people would have felt further betrayed.
Anniebach Do you want Labour to win an election at any cost, broadly based on the austerity-driven policies of the Conservative Party? Or do you want a party that prioritises the health, education/training and housing of its people in order that they, as healthy, happy and skilled citizens, have the mnotivation to work hard for their family, society and country and make it the success that we know it can be?