Me alegra saber que no quieres tener hijos. Yo tampoco quiero tenerlos.I am happy to know you don't want to have kids. I don't want to have any either.
No voy de vacaciones este año porque tengo demasiado trabajo. - Yo tampoco.I'm not going on vacation this year because I have too much work. - Neither am I.
Yo sé que tú no eres egoísta; yo tampoco, y por eso la gente se aprovecha de nosotros.I know you aren't selfish; nor am I, and that's why people take advantage of us.
Yo tampoco digo que lo compres. Solo sugiero que sería una buena inversión.I'm not saying you have to buy it. I'm only suggesting it would be a good investment.
Si tú no quieres venir yo tampoco voy a insistir.If you don't want to come I won't insist.