When I was still pregnant with my little girl, sabi ko sa sarili ko, palalakihin ko sya na English ang pagsasalita. I worked in a call center then, I've worked for a mag din before, and I graduated with a degree in Journalism - I saw how great of an advantage it is when someone can speak English in such a natural and confident way, especially in the Filipino corporate world.
But when I stopped working na (she was about six months then), I saw it wasn't going to work for her. Hindi dahil sa hindi niya kakayanin mag-English (kids will adapt to whatever language they're raised with anyway), kung hindi dahil hindi sya effective means of communication within a community like ours na predominantly tagalog ang salita. I've seen and heard kids who communicate in English, and while they seem impressive to some, hindi ganon ang tingin sa kanila ng kapwa nila bata. Other kids tend to feel uncomfortable around them, dahil hindi English ang means of communication nila.
I personally believe na it's much better for a child, especially from babyhood up until they start schooling, to be spoken to or taught with the vernacular language (especially if you don't intend to migrate to another country anytime soon). Yun kasi yung time na nabu-build ng isang bata ang foundation niya for communication. My two-year old basically copies everything I say, and is very inquisitive. When she asks 'Ano 'to?', I tell her what the object is in both English and Tagalog, but she basically uses the term she finds me using more often. Like for chicken, since I say chicken more often, she never calls it manok, just chicken. She knows very basic English words, like stop, no, work, sleep, type, etc. But she also says hindi, ayaw, tulog, and uses those words appropriately too.
Her conversations with us are also in Tagalog.
Sa akin kasi, she'll learn how to speak English when she starts studying. And she doesn't necessarily have to be raised with it to be good at it. My take: I'd rather teach her correct grammar, pronunciation, delivery, intonation, etc. when she starts schooling and takes English subjects. More on reinforcement and honing her skills lang ba. In the meantime, we can converse in both Tagalog and English, and let her be comfortable in using both.
To each his own lang din naman talaga yan. Depende sa kung ano sa tingin ng isang parent ang best for his or her child. We just always have to remember na what we're raising them with (language, values, ideals), is what they'll believe to be right and true for most of their life as kids.