Greetings in that Divine and Most Precious Name of Our Lord and Savior Jesus Christ!
One thing I miss about the Protestant churches we used to attend was the sense of community, and the opportunities for fellowship to build up the spiritual life. I also miss all the volunteer opportunities to help out those in need.
When I bring this up to fellow Catholics I get something along the lines of "well that's not what church is for. The Mass is to worship and participate in the Eucharist". OKay no problem... then what? I typically see nearly everyone running for the door. As big as some of the local Catholic Churches compared to the Protestant churches it's very sad. The Proetstant churches with the fraction of the population aren't afraid of a 90 to 120min service, then to add some sort of study program that morning on top of that. Then the'll also find time for community involvement, church wednesday night, etc
Obviously not ALL Catholics are like that.... but between Sundays is usually stay-at-home mom's or seniors participating in the church.
And again Mass / Eucharist IS important the fellowship of believers between Sundays' liturgy seems important as well.
If you can't find opportunities to volunteer or get involved in your community in the Catholic Church, you're just not looking hard enough. The Catholic Church is ridiculously involved with food banks, shelters, hospitals, schools, community programs, etc etc.. Just about EVERY parish has several committees which facilitate all of this. Ask around the board, they will send you in the right direction. Now as to Orthodox, we very well could learn from the Protestant and Catholic example of community involvement. However, a lot of Orthodox are ethnic parishes, and we have an obligation to care for the spiritual needs of our own as well, so I can understand both priorities, however they are not necessarily mutually exclusive.
I have always enjoyed the Evangelical's extra involvement in volunteering in the community. In the US, at several times in history these groups have helped push forward to change the world. The modern systems of public health care, public schools, and regulated public prisons all came from early American Protestant movements. Catholics have of course always had the same kinds of institutions, predating the Americans even, but the Americans seemed to be more successful at a larger scale. In the past I have always enjoyed working with Evangelical soup kitchens and volunteer programs. We in the Orthodox can very much learn from their example, however, again it seems the Catholics already do a good job of this, so we could just follow theirs