One clearly sees that Friedhelm Hardy (the scholar of Śrīvaiṣṇavism who died untimely in 2004) loves what he is working on. This might make him go too far (in my opinion) in defending Śrīvaiṣṇavism, for instance his treatment of the devadāsī issue seems to me to go too far in forgetting that the institution of devadāsī was itself declining (although he admits the decline at first):
[…] one further topic cannot be avoided: the music and dance professionally cultivated by the devadāsīs. […] Missionaries like the Abbé Dubois and some Westernized Indians, encountering a presumably declining stage in the development of the devadāsī institution, attacked it with a puritanical fanaticism which was equalled only by their complete ignorance of (or unwillingness to understand) its history and the motivation behind it. They succeeded only too well in their task: the abolition by law of the devadāsīs was regarded as a necessary reform of South Indian temple culture, but it also resulted in the total destruction of one major segment of that culture through which for one and a half millennia deep-rooted Southern religious sentiments had expressed themselves. The whole range of art that had surrounded the temple was eliminated, and even the whole issue of temple eroticism was prejudiced. […] Viṣṇu […] derives enjoyment from the art of the girls who are dedicated to him, just as he would enjoy the tulsī, kuṅkuma, camphor, etc. which are offered to him in the pūjā. And just as he returns these objects after the worship to the devotee, these girls are returned. Thus it seems possible to interpret [a man's] union with [a devadāsī] […] as a special type of prasādam.
(Hardy 1977, pp.138-140)
But I still tend to think that being too fond of one's subject is better than hating it (as is often the case). I remember my professor of Indian history, who was an excellent scholar but who really despised Indians, probably like some 19th c. British. He would say things such as "Although they have such an enormous amount of costs, the Indians were unable to build proper harbours until the British came".
Do you dare sharing your attitude towards what you study?
On Hardy, see my post "Do we have to write in a dry, unadorned style?", written on November the 23rd 2011.