As Jesus said to John,"Baptise me to fulfill the scriptures";notice he didn't say he needed baptism in order to receive the Holy Spirit,which as we know,he had already received at birth,as had John. Baptism was a popular harmless ceremony,and because Jesus came "not to destroy" harmless customs and traditions,he saw no harm in being baptised by John.
I haven't been baptised because it's not my style,as I've no interest in dead material atoms of H2O, and to his credit even a Baptist Minister told me its not necessary for salvation. Yet some people think it automatically makes them "holy" despite baptism and the coming of the holy spirit being completely unrelated:-
  "The holy spirit hadn't come upon the Samaritans as they'd simply been baptised" (Acts 8:16)
  And no doubt some baptised people think they're holier than those who haven't been.
  And  people who haven't been baptised might wrongly think they're inferior to someone who has been. See how divisive and satanic the subject of baptism can be when used by some to bully others into going through with it?
  Paul got fed up of people pestering him to baptise them. He said:-"Jesus sent me not to baptise,but to preach the gospel" (1 Cor 1:17)
  We need no weak water to wash us clean. Jesus said:- "You're already clean through the word I spoke to you" (John 15:3)
And when people asked Jesus "how can I receive eternal life?",Jesus made no mention of water-baptism being needed.
  Baptism is just a nice ceremony for those who like ceremony.If people think water has holy magic properties,it smacks of matter-worship,or idolatry.

 If people choose not to accept Jesus they don't really WANT to go to heaven and be near him do they?
   Jesus said "In my Fathers kingdom are many mansions,I'm going there to prepare places for you,so that we'll all be there together" (John 14:2)
Therefore,because the only alternative to heaven is hell,they're SENDING THEMSELVES to Satan by their own free choice!

  The Bible is quite clear and simple about what happens when we die:-
  When we die,time stops for us and we go into a "sleep of death" to await Judgement Day:-
  "Don't grieve for those asleep,for they sleep in Jesus" (1 Thess 4:13/14)
  Then on Judgement Day,christians AND nonchristians get a wake-up call:-
  As Jesus said:- "ALL in the graves shall come out,to resurrection or damnation" (John 5:28/29)
  Then the christians are whisked off to heaven and the nonchristians are left standing on earth.
  And then they begin screaming as Jesus said:- "Thrown screaming into the fire" (Matt 13:41/42)
   They had their chance:-"It's dreadful to fall into the hands of God for trampling his son underfoot" (Heb 10:29-31)
  Hence the terrible warning:- "Work out your own salvation with fear and trembling" (Philip 2:12)