Re: Sada Suhaagan Raho!
Your post has answer to your question. It is not gender neutral. Its used for ladies only and as i mentioned there is a fear in desi ladies about bad treatment in case their husband dies before them, which lead to this ‘Sada Suhagan Raho’, ‘Sartaaj aap ki aai mujhe aae’ type stuff.
There are so many traditions connected behind this ‘Sada Suhagan Raho’. It starts from Gaud Bharai / Mayun type ceremonies (where all suhagans need to do shagun). Widows are normally kept away in such situations (They are considered unlucky / manhoos as if they have murdered their husbands themselves). Though Satti got a religious tradition (and probably was not practiced first at the time of death of husband), but gradually it was performed at the time of death of husband. We don’t get any incidents of males sacrificing themselves at the time of death of wives, because they were never been brain washed with slogans like ‘sada suhagan raho’.
There are alternates to this ‘sada suhagan raho’. In fact a famous line from Mir Anees’s Marsiya ‘Maang sandal se aur gaud bachon se bhari rahe’ indicates it. Sandal in Maang = Sindoor in Maang (symbol of suhaagan).
PS: Sada Suhagan is otherwise also used for prostitutes as well.