i dont know how its SELFLESS??

lets assume that god is feelingless,now plz dont have an attitude that i cant assume such nonsense! by this(god is feelingless) i mean that he is not at all impressed when you feed a poor! will you continue to do this kind of social service if you come to know that god is not going to give you any credit for this???
its our psychology,rather i would say the way we are brought up since childhood,which develops such feelings that helping someone is like a credit in your god's account,i am not sure if god feels the same??
i have seen people taking social service as self credit and debit,just because they are living with a belief that if they do so,they are doing good,what if their is no credit or no recognition or fame for such things??
i am not condemning social service,i am just strucked at the point of credit and debit??is it really like people do it for pleasure,the old people in this profession may be doing this for their pleasure,because they are already at the dusk of their life,and everyone is scared from god (sorry i am being a bit negative,but i can doubt,thats why they are much i the business,now plz dont say that dont coin words like business for social service),but what about the youngsters??do they feel divine in doing so???
coz their was a trend of wearing clothes written om or slokas...is this the same fashion???
i dont mean to target anyone,its just that i simply do not understand this SELFLESS pleasure,i dont know how its SELFLESS???