To be honest, it boils down to what the potential buyer`s attitude is. Myself, as mechanic who services all his own cars, family cars and friends cars, I would personally not be put off by a seller who has serviced his car himself, as long as its clear he knows what he is talking about. Personally in that case id actually see it as a bonus and a positive thing over a seller who simply entrusted the YTS lad at the local garage to change his oil & give his car a good thrashing in the process. Someone who has serviced their car themselves knows exactly what oil & parts have gone on it, and know its been done correctly.
But, your right, some buyers insist on a FSH and anything other than that they see as a negative.
Good advice and I share your opinion bunny