car seats!

I keep going back and forth between buying an infant car seat and buying a convertible that will take this baby from birth to toddler. We did the infant with our son, but feel like it would have been better to save our money. I plan on baby wearing a lot like in stores and stuff so I feel like the infant seat might be a waste, but I also remember how convenient it was to just keep them in it when they fell you didn't have to worry about putting them into a hot/cold car seat because it came inside...any pro/cons that you have from personal experience?